xyy/ASTM-D7896-19TransientHot-Wire-Method
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xyy
2026-06-01 19:25:57 +08:00
parent 84df130973
commit dea0d29d18
3 changed files with 8 additions and 8 deletions
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9
ViewModels/D7896ViewModel.cs
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@@ -90,10 +90,9 @@ public partial class D7896ViewModel : ObservableObject
private const double EulerGamma = 0.5772156649; // 欧拉常数
//private const double WireRadius = 0.00003; // 铂丝半径 (0.03 mm)
private const double WireRadius = 0.00010; // 铂丝半径 (0.03 mm)
[ObservableProperty] private double _sampleDensity = 1000.0; // 新增，密度默认值1000 kg/m³（水）
int samples = 1000; // 1秒 * 1000点/秒
double heatingDuration = 1; // 加热时间 0.8 秒（需与您的加热脉冲宽度一致）
double heatingDuration =1; // 加热时间 0.8 秒（需与您的加热脉冲宽度一致）
double totalDuration = 2; // 总采样时间（加热 + 冷却）
public D7896ViewModel()
{
@@ -409,7 +408,7 @@ public partial class D7896ViewModel : ObservableObject
if (i < _config.TestParameters.MeasurementCount && !_stopRequested)
{
try { await Task.Delay(_config.TestParameters.IntervalSeconds * 1000, _testCts.Token); } catch (OperationCanceledException) { break; }
try { await Task.Delay(_config.TestParameters.IntervalSeconds * 500, _testCts.Token); } catch (OperationCanceledException) { break; }
}
}
@@ -550,7 +549,7 @@ public partial class D7896ViewModel : ObservableObject
// 计算热扩散率
double exponent = intercept / slope + EulerGamma;
if (exponent > 30) exponent = 30;
double alpha = (WireRadius * WireRadius / 4.0) * Math.Exp(exponent);
double alpha = (_config.TestParameters.PlatinumWireDiameter / 2 * _config.TestParameters.PlatinumWireDiameter / 2 / 4.0) * Math.Exp(exponent);
if (_config.TestParameters.UseFixedAlpha)
{
alpha = _config.TestParameters.FixedAlpha;
@@ -635,7 +634,7 @@ public partial class D7896ViewModel : ObservableObject
for (int i = 0; i < n; i++)
{
bool inFit = (i >= fitStart && i <= fitEnd);
sw.WriteLine($"{i},{time[i]:F6},{ustd[i]:F6},{upt[i]:F6},{(double.IsNaN(deltaT[i])?0:deltaT[i]):F6},{(inFit?1:0)}");
sw.WriteLine($"{i},{time[i]:F6},{ustd[i]:F6},{upt[i]:F6},{(double.IsNaN(deltaT[i]) ? 0 : deltaT[i]):F6},{(inFit ? 1 : 0)}");
}
}