Drag coefficient - Wikipedia
In fluid dynamics, the drag coefficient (commonly denoted as: , or ) is a dimensionless quantity that is used to quantify the drag or resistance of an object in a fluid environment, such as air or water. It is used in the drag equation in which a lower drag coefficient indicates the object will have less aerodynamic or hydrodynamic drag.
Drag Coefficient - The Engineering ToolBox
2010年11月25日 · The drag coefficient quantifies the drag or resistance of an object in a fluid environment. Any object moving through a fluid experiences drag - the net force in the direction of flow due to pressure and shear stress forces on the surface of the object.
Typical drag coefficients for regular 3-D objects
When the wind was on the side, we took the drag coefficient of a hexagon with 1 (Aziz et al., 2008). When the wind was on the top, we took the drag coefficient of a sphere with 0.45 because...
• Look at tables of drag coefficient for various objects (geometric shapes, parachutes, trees, people, buildings, etc.) • Do a “student-friendly” example problem – drag on a bicycle
8.6: Drag Forces in Fluids - Physics LibreTexts
2022年7月20日 · Some typical coefficients of viscosity are listed in Table 8.2. This law can be applied to the motion of slow moving objects in a fluid, for example: very small water droplets falling in a gravitational field, grains of sand settling in water, or the sedimentation rate of molecules in a fluid.
Drag Force: Definition, Formula, and Examples - Science Facts
2023年2月2日 · The resistance offered by a fluid, like air and water, is called the drag force or drag when an object moves through it. It acts in a direction opposite to the object’s motion. It is generated by the relative velocity between the solid object and the fluid.
Example: Drag Force – Drag Coefficient - Problem with Solution
Example: Drag Force – Drag Coefficient – Fuel Bundle. Calculate the friction drag of a single fuel rod inside a reactor core at normal operation (design flow rate). Assume that this fuel rod is part of a fuel bundle with the rectangular fuel lattice, and this fuel bundle does not contain spacing grids.
Drag coefficient for a sphere: and atmospheric pressure. The plate is 1.0m long in the flow direction and 0.5m wide. On one side of the plate, the boundary layer is tripped at leading edge (turbulent flow on that side). Find the total drag force on the plate.
Automobile drag coefficient - Wikipedia
The drag coefficient is a unit-less value that denotes how much an object resists movement through a fluid such as water or air. A potential complication of altering a vehicle's aerodynamics is that it may cause the vehicle to get too much lift.
67 Worked Examples: Airfoils & Wings - Embry–Riddle …
These worked examples have been fielded as homework problems or exam questions. The diagram below shows pressure distribution on an airfoil at 10 angle of attack. The questions involve answers and annotations. Use a solid line to indicate the chord line of the airfoil and a dashed line to indicate the mean camberline. See the figure.
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