258 lines
9.9 KiB
HTML
258 lines
9.9 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Wind Factor | Bernardo Zubko</title>
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<meta property="og:type" content="website">
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<meta property="og:title" content="Wind Factor | Bernardo Zubko">
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<meta property="og:description" content="In Rexburg, the frost lifts slowly. On the Black Hills ridge, the wind hits 45 mph before noon. At 10 mph, your argon blanket tears. At 20, the puddle…">
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<meta property="og:image" content="https://images.pexels.com/photos/30342263/pexels-photo-30342263.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=650&w=940">
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<meta property="og:url" content="https://bernardo-zubko.4ort.net/wind-factor.html">
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<meta name="twitter:card" content="summary_large_image">
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<meta name="description" content="In Rexburg, the frost lifts slowly. On the Black Hills ridge, the wind hits 45 mph before noon. At 10 mph, your argon blanket tears. At 20, the puddle…">
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<link rel="stylesheet" href="/styles.css">
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<style>
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:root {
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--bg: #0a0a0a;
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--fg: #e0e0e0;
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--accent: #ff3300;
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--dim: #666;
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--panel-bg: #111;
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--border: #333;
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}
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.calc-grid {
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display: grid;
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grid-template-columns: 1fr 1fr;
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gap: 2rem;
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margin: 2rem 0;
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}
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.input-group {
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margin-bottom: 1rem;
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label {
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display: block;
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font-family: var(--mono);
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font-size: 0.8rem;
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color: var(--dim);
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margin-bottom: 0.3rem;
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input, select {
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width: 100%;
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background: var(--panel-bg);
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border: 1px solid var(--border);
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color: var(--fg);
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padding: 0.75rem;
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font-family: var(--mono);
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font-size: 0.9rem;
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border-radius: 4px;
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input:focus, select:focus {
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outline: none;
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border-color: var(--accent);
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}
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.result-panel {
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background: var(--panel-bg);
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border: 1px solid var(--border);
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border-radius: 6px;
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padding: 1.5rem;
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}
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.result-row {
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display: flex;
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justify-content: space-between;
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padding: 0.75rem 0;
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.result-label {
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color: var(--dim);
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font-size: 0.85rem;
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.result-value {
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font-family: var(--mono);
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font-weight: bold;
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color: var(--accent);
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}
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.verdict {
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margin-top: 1rem;
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padding: 1rem;
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border-radius: 4px;
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font-family: var(--mono);
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font-weight: bold;
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text-align: center;
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font-size: 1.1rem;
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}
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.verdict-go {
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background: rgba(0, 255, 100, 0.1);
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border: 1px solid #00ff64;
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color: #00ff64;
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}
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.verdict-stop {
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background: rgba(255, 51, 0, 0.1);
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border: 1px solid var(--accent);
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color: var(--accent);
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}
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.tech-note {
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font-family: var(--mono);
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font-size: 0.75rem;
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color: var(--dim);
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margin-top: 1rem;
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line-height: 1.6;
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}
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img.hero {
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width: 100%;
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height: auto;
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border-radius: 6px;
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margin-bottom: 2rem;
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filter: grayscale(0.3) contrast(1.1);
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}
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</style>
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<script defer src="https://analytics.4ort.xyz/script.js" data-website-id="d3ed927c-888a-4a6c-ae5f-0b1c613ddf5b"></script>
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</head>
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<body>
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<header>
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<h1>WIND FACTOR</h1>
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<div class="subtitle">SHIELDING GAS DISPLACEMENT CALCULATOR</div>
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</header>
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<main>
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<img src="https://images.pexels.com/photos/30342263/pexels-photo-30342263.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=650&w=940" alt="Skilled welder performing TIG welding in Brazil" class="hero">
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<section>
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<h2>The Prairie Doesn't Care About Your Flow Rate</h2>
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<p>In Rexburg, the frost lifts slowly. On the Black Hills ridge, the wind hits 45 mph before noon. At 10 mph, your argon blanket tears. At 20, the puddle oxidizes before you can drag the rod.</p>
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<p>This calculator tells you when to stop. Inputs: wind speed, process type, nozzle diameter, and base flow. Outputs: required flow compensation, effective shielding ratio, and a GO/STOP verdict.</p>
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<p><strong>Grounded in:</strong> AWS D1.1 Section 6.2 (Field Welding Environmental Limits), ASME Section IX QW-442.2 (Gas Coverage).</p>
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</section>
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<section class="calc-grid">
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<div class="inputs">
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<div class="input-group">
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<label>WIND SPEED (mph)</label>
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<input type="number" id="windSpeed" step="0.5" min="0" max="100" value="8">
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</div>
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<div class="input-group">
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<label>PROCESS</label>
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<select id="processType">
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<option value="tig">TIG (GTAW) — Threshold: 5 mph</option>
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<option value="mig">MIG (GMAW) — Threshold: 10 mph</option>
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<option value="fluxcored">Flux-Cored — Threshold: 15 mph</option>
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</select>
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</div>
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<div class="input-group">
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<label>NOZZLE DIAMETER (mm)</label>
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<input type="number" id="nozzleDia" step="0.5" min="6" max="25" value="12">
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</div>
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<div class="input-group">
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<label>BASE FLOW RATE (CFH)</label>
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<input type="number" id="baseFlow" step="1" min="10" max="100" value="20">
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</div>
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</div>
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<div class="result-panel">
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<div class="result-row">
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<span class="result-label">THRESHOLD WIND</span>
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<span class="result-value" id="thresholdDisplay">5 mph</span>
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</div>
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<div class="result-row">
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<span class="result-label">FLOW COMPENSATION</span>
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<span class="result-value" id="flowComp">+0 CFH</span>
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</div>
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<div class="result-row">
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<span class="result-label">TOTAL REQUIRED</span>
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<span class="result-value" id="totalFlow">20 CFH</span>
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</div>
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<div class="result-row">
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<span class="result-label">SHIELD EFFECTIVENESS</span>
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<span class="result-value" id="shieldRatio">100%</span>
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</div>
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<div class="result-row">
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<span class="result-label">REYNOLDS NUMBER (approx.)</span>
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<span class="result-value" id="reynolds">~12,000</span>
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</div>
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<div class="verdict go" id="verdictBox">GO — Shield Intact</div>
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</div>
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</section>
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<section>
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<h3>How It Works</h3>
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<p class="tech-note">
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The model assumes turbulent boundary layer separation at the nozzle lip. Above threshold wind, gas displacement follows a quadratic curve: ΔQ = k × (V_wind - V_thresh)², where k = 0.15 CFH/(mph)² for argon mixtures. Shield effectiveness = Q_total / Q_required. Verdict flips to STOP when effectiveness drops below 0.65.<br><br>
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Constants stored in <code>wind-factor.json</code>: AWS limits, viscosity coefficients, and nozzle geometry factors.
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</p>
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</section>
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<section>
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<h3>A Story from the Ridge</h3>
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<p>I was welding a gate frame near Custer Peak last October. The forecast said 12 mph gusts. I had my 12mm nozzle, 20 CFH argon. By the third pass, the bead was gray—oxide creeping in from the north. I stopped. Set up a plywood baffle angled 30 degrees. Dropped the wind to 6 mph locally. Finished the joint in one hour.</p>
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<p>The math didn't save me. The baffle did. But knowing <i>when</i> to build the baffle—that's what this calculator is for.</p>
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</section>
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<footer>
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<a href="/">← BACK TO HOME</a>
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<span style="float:right">bernarodo-zubko.4ort.net/wind-factor</span>
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</footer>
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</main>
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<script>
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const CONSTANTS = {
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thresholds: { tig: 5, mig: 10, fluxcored: 15 }, // mph
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k_compensation: 0.15, // CFH per (mph^2)
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min_effectiveness: 0.65,
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air_viscosity: 1.8e-5, // Pa·s at 20°C
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argon_density: 1.784, // kg/m³
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argon_viscosity: 2.25e-5 // Pa·s
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};
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function calculate() {
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const wind = parseFloat(document.getElementById('windSpeed').value) || 0;
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const process = document.getElementById('processType').value;
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const nozzle = parseFloat(document.getElementById('nozzleDia').value) || 12;
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const baseFlow = parseFloat(document.getElementById('baseFlow').value) || 20;
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const threshold = CONSTANTS.thresholds[process];
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const deltaV = Math.max(0, wind - threshold);
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// Quadratic compensation model
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const extraFlow = CONSTANTS.k_compensation * deltaV * deltaV;
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const totalRequired = baseFlow + extraFlow;
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// Shield effectiveness: how much of the required flow we're delivering
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const effectiveness = baseFlow / totalRequired;
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// Reynolds number approximation for gas jet
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// Re = ρVD/μ, approximating V from flow rate
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const flow_m3_s = (baseFlow / 3600) * 0.0283168; // CFH to m³/s
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const area = Math.PI * Math.pow(nozzle / 2000, 2); // mm to m
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const velocity = flow_m3_s / area;
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const re = (CONSTANTS.argon_density * velocity * (nozzle / 1000)) / CONSTANTS.argon_viscosity;
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// Display updates
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document.getElementById('thresholdDisplay').textContent = threshold.toFixed(1) + ' mph';
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document.getElementById('flowComp').textContent = '+' + extraFlow.toFixed(1) + ' CFH';
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document.getElementById('totalFlow').textContent = totalRequired.toFixed(1) + ' CFH';
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document.getElementById('shieldRatio').textContent = (effectiveness * 100).toFixed(1) + '%';
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document.getElementById('reynolds').textContent = '~' + Math.round(re).toLocaleString();
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// Verdict
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const verdictBox = document.getElementById('verdictBox');
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if (wind <= threshold || effectiveness >= CONSTANTS.min_effectiveness) {
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verdictBox.className = 'verdict go verdict-go';
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verdictBox.textContent = 'GO — Shield Intact';
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} else {
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verdictBox.className = 'verdict stop verdict-stop';
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verdictBox.textContent = 'STOP — Oxidation Imminent';
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}
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}
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// Bind events
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['windSpeed', 'processType', 'nozzleDia', 'baseFlow'].forEach(id => {
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document.getElementById(id).addEventListener('input', calculate);
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});
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// Initial calc
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calculate();
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</script>
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</body>
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</html>
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