skin friction वाक्य
उदाहरण वाक्य
मोबाइल
- Its blades are wedge-shaped to force cavitation at the leading edge and to avoid water skin friction along the whole forward face.
- The above lift equation neglects the skin friction forces, which typically have a negligible contribution to the lift compared to the pressure forces.
- The drag coefficient of any object comprises the effects of the two basic contributors to fluid dynamic drag : skin friction and form drag.
- The skin friction lines may exhibit a number of different types of singularities : attachment nodes, detachment nodes, Isotropic nodes, Saddle points, and foci.
- Its blades are wedge-shaped to force cavitation on the whole forward face, starting at the leading edge, in order to reduce water skin friction.
- However, the same velocity profile which gives the laminar boundary layer its low skin friction also causes it to be badly affected by adverse pressure gradients.
- At high Reynolds number ( Re ~ 10 2 ), both skin friction and form force act to generate drag, but only form force produces thrust.
- There are two ways to decrease skin friction : the first is to shape the moving body so that smooth flow is possible, like an airfoil.
- The equivalent skin friction coefficient accounts for both separation drag and skin friction drag and is a fairly consistent value for aircraft types of the same class.
- It is said that Magnus himself wrongly postulated a theoretical effect with laminar flow due to skin friction and viscosity as the cause of the Magnus effect.
- The equivalent skin friction coefficient accounts for both separation drag and skin friction drag and is a fairly consistent value for aircraft types of the same class.
- The Kutta condition is an alternative method of incorporating some aspects of viscous effects, while neglecting others, such as skin friction and some other boundary layer effects.
- "' Skin friction drag "'is a component of profile drag that occurs differently depending on the type of flow over the lifting body ( laminar or turbulent ).
- In contrast, the air passing through the slot has not experienced this high local airspeed or high skin friction, and its total pressure remains close to the free-stream value.
- For a well designed aircraft, zero-lift drag ( or parasite drag ) is mostly made up of skin friction drag plus a small percentage of pressure drag caused by flow separation.
- A consequence of the turbulent boundary layer is increased skin friction relative to a laminar boundary layer, but this is very small compared to the increase in drag associated with separation.
- Where C _ { fe } is the equivalent skin friction coefficient, S _ { wet } is the wetted area and S _ { ref } is the wing reference area.
- Experimental data for gas streams agree approximately with above equation if the Prandtl numbers are near 1.0 and only skin friction is present in flow past a flat plate or inside a pipe.
- The head-down body position has to be carefully managed to be as streamlined as possible, while special helmets and slick body suits reduce skin friction, which is a function of surface area and texture.
- For those animals which undulate at intermediate Reynolds number ( Re ~ 10 1 ), such as the Ascidian larvae, both skin friction and form force account for the production of drag and thrust.
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