Pressure drag
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The resistance that an object moving through a fluid experiences is the resultant force of pressure forces acting perpendicular to the object's surface. Because it is strongly dependent on the object's shape, it is sometimes called form drag. The remaining part of the resistance is viscous drag, which is the resultant force of viscous forces parallel to the object's surface. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
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流体中を運動する物体が流体から受ける抵抗のうち，物体表面に垂直に働く圧力の合力から成る部分をいう。物体の外形に強く依存するため，形状抵抗 form dragと呼ばれることもある。抵抗の残りの部分は，物体表面に平行な粘性力の合力から成る粘性抵抗である。
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