Math & Numbers
计算物体在流体中的绕流阻力：F_D=½·ρ·v²·C_D·A（N）。ρ 为流体密度，v 为来流速度，C_D 为阻力系数（与形状、雷诺数相关），A 为参考（迎风投影）面积。内置常见形状的典型 C_D（高 Re）：球体 0.47、半球 0.42、长圆柱 0.81、圆盘/平板 1.17、立方体 1.05、流线型翼型 0.04、长流线型椭球 0.07、圆锥 0.50；也可选「自定义」手输 C_D。可选填动力粘度 μ 与特征长度 L，则同时计算雷诺数 Re=ρ·v·L/μ；并给出阻力消耗功率 P=F_D·v（W）。密度支持 kg/m³/g/cm³，速度支持 m/s/km/h，面积支持 m²/cm²/mm²，长度支持 m/cm/mm。
用三种语言从你的代码中调用此工具。
curl -X POST 'https://api.elysiatools.com/zh/api/tools/drag-force-calculator' \
-H 'Content-Type: application/json' \
-d '{"shapeType":"sphere","dragCoeff":0.47,"density":1.225,"densityUnit":"kg/m3","velocity":20,"velocityUnit":"m/s","referenceArea":1,"areaUnit":"m2","dynamicViscosity":0,"charLength":0,"lengthUnit":"m","decimalPlaces":4}'以 JSON 形式 POST 提交输入参数。文件类型参数需先单独上传。
POST https://api.elysiatools.com/zh/api/tools/drag-force-calculator| 参数名 | 类型 | 必填 | 说明 |
|---|---|---|---|
| shapeType | select | 否 | Body shape. Selecting a preset fills the typical drag coefficient C_D for that shape at high Reynolds number. Choose 'Custom' to enter C_D directly. |
| dragCoeff | number | 是 | Drag coefficient C_D (0 to 5). When a preset Shape is selected, the typical value is filled in automatically; you may still override it. Choose Shape = Custom to enter your own value. |
| density | number | 是 | Fluid density ρ. Enter in the selected Density Unit. |
| densityUnit | select | 否 | — |
| velocity | number |
将此工具加入你的 Model Context Protocol 服务，让 AI 智能体可以列出并调用它。
将以下内容加入你的 MCP 客户端配置：
{
"mcpServers": {
"elysiatools-drag-force-calculator": {
"name": "drag-force-calculator",
"description": "计算物体在流体中的绕流阻力：F_D=½·ρ·v²·C_D·A（N）。ρ 为流体密度，v 为来流速度，C_D 为阻力系数（与形状、雷诺数相关），A 为参考（迎风投影）面积。内置常见形状的典型 C_D（高 Re）：球体 0.47、半球 0.42、长圆柱 0.81、圆盘/平板 1.17、立方体 1.05、流线型翼型 0.04、长流线型椭球 0.07、圆锥 0.50；也可选「自定义」手输 C_D。可选填动力粘度 μ 与特征长度 L，则同时计算雷诺数 Re=ρ·v·L/μ；并给出阻力消耗功率 P=F_D·v（W）。密度支持 kg/m³/g/cm³，速度支持 m/s/km/h，面积支持 m²/cm²/mm²，长度支持 m/cm/mm。",
"baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=drag-force-calculator",
"command": "",
"args": [],
"env": {},
"isActive": true,
"type": "sse"
}
}
}连接到 SSE 端点后，列出已开放的工具：
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/list"
}通过工具 id 调用，参数由其参数表构建：
{
"jsonrpc": "2.0",
"id": 2,
"method": "tools/call",
"params": {
"name": "drag-force-calculator",
"arguments": {
"shapeType": "sphere",
"dragCoeff": 0.47,
"density": 1.225,
"densityUnit": "kg/m3",
"velocity": 20,
"velocityUnit": "m/s",
"referenceArea": 1,
"areaUnit": "m2",
"dynamicViscosity": 0,
"charLength": 0,
"lengthUnit": "m",
"decimalPlaces": 4
}
}
}有问题或反馈？请联系 [email protected]
| Free-stream velocity v. Enter in the selected Velocity Unit. |
| velocityUnit | select | 否 | — |
| referenceArea | number | 是 | Reference (frontal projected) area A. Enter in the selected Area Unit. |
| areaUnit | select | 否 | — |
| dynamicViscosity | number | 否 | Dynamic viscosity μ of the fluid in Pa·s. Optional — when supplied together with a characteristic length L, the Reynolds number Re = ρ·v·L/μ is computed. |
| charLength | number | 否 | Characteristic length L of the body. Optional — used only to compute Re. Enter in the selected Length Unit. |
| lengthUnit | select | 否 | — |
| decimalPlaces | number | 否 | — |
JSON 结果
{
"key": {...},
"metadata": {
"key": "value"
},
"error": "Error message (optional)",
"message": "Notification message (optional)"
}