Air 120 km/h 15°C Engine block

Q: During a high Reynolds number experiment, the total drag force acting on a spherical body of…

A: Given data, From stokes equation,

Q: Wind loading is a primary consideration in the design of the supporting mechanisms of billboards, as…

A:

Q: During major windstorms, high vehicles such as RVs and semis may be thrown off the road and boxcars…

A: Draw the free body diagram.

Q: At highway speeds, about half of the power generated by the car’s engine is used to overcome…

A: Given data: Velocity when a person drives normally, V1 = 55 mi/h Velocity when a person drives…

Q: By which part of the Aircraft is mainly produced the "Induced drag" ??

A: Lift causes induced drag, which is unavoidable.

Q: To reduce the drag coefficient and thus to improve the fuel efficiency, the frontal area of a car is…

A:

Q: d the thickness of the boundary layer at a distance of x = 20 c

A: Re @ x =20 cm  Re = ρ Vxμ = Vxν= 5 * 0.21.995 x 10-5=50125.31328 < critical reynold snumber ,…

Q: how does drag coefficient vary with the Reynolds number? a) low and moderate Reynolds numbers and at…

A: Fluid mechanics

Q: The passenger compartment of a minivan traveling at 50 mi/h in ambient air at 1 atm and 80°F is…

A: Given Data: The velocity of the car is: V= 50 mi/h. The dimension of the car is: l X b X h= 11 ft X…

Q: To reduce the drag coefficient and thus to improve the fuel efficiency, the frontal area of a car is…

A: Given that, The drag force on the car will be –

Q: In flow over bluff bodies such as a cylinder, how does the pressure drag differ from the friction…

A: The pressure drag is generated due to the shape of the object and it depends on the flow of…

Q: A 70 kg bicyclist is riding her 15 kg bicycle downhill on a road with a slope of 8º without pedaling…

A: terminal velocity is reached  when there is no external force acting on the body that is in this…

Q: A 70 kg bicyclist is riding her 15 kg bicycle downhill on a road with a slope of 8° without pedaling…

A:

Q: A small aircraft has a wing area of 37 m2, a lift coefficient of 0.45 at takeoff settings, and a…

A: Given data Wing area = 37 m2 Lift coefficient = 0.45 Total mass = 4300 kg Speed = 300 km/h =83.33…

Q: A 5-mm-diameter electrical transmission line is exposed to windy air. Determine the drag force…

A: Given data: The diameter of the electrical transmission line, d = 5 mm. The velocity of wind…

Q: A circular sign has a diameter of 50 cm and is subjected to normal winds up to 150 km/h at 10°C and…

A: Before solving we have to make some assumptions as follows: The flow of air is steady and…

Q: Water at a velocity of 1.0 m/s flows along the length of one side of a flat plate that is 2 meters…

A:

Q: , A small aircraft has a wing area of 40 m2a lift coefficient of 0.45 at takeoff settings, and a…

A:

Q: Briefly explain laminar, transition and turbulent flow based on boundary layer separation.

A: Boundary layer separation. The detachment of a boundary layer from a surface into a wake is known as…

Q: During a winter day, wind at 58 km/h, 5°C, and 1 atm is blowing parallel to a 3.5-m-high and…

A: Given : The velocity of the wind = 58 km/hr The temperature of the air T = 5°C The pressure of the…

Q: To reduce the drag coefficient and thus to improve the fuel efficiency, the frontal area of a car is…

A: Given details: Ai=18 ft2Ao=15 ft2d=12000 mi=12000×5280=63360000ftv=55…

Q: 2- Air (v = 1.8×10° m/s) flows along a flat plate with a velocity of 150 km/hr. How long does the…

A:

Q: A tennis ball with a mass of 57 g and a diameter of 6.4 cm is hit with an initial velocity of 105…

A: Without Spin ,  When we hit the ball horizontally it will be goes down due to effect of Gravity.…

Q: What effect does increasing the Reynolds number have on coefficient of lift and drag?

A: we know that Reynolds no. is defined as the ratio between flow inertia and viscosity.

Q: b) A 4 m long and 2 m wide plate shown in Figure Q1(b) is positioned in seawater flowing at 1.5 m/s…

A:

Q: At highway speeds, about half of the power generated by the car’s engine is used to overcome…

A: Given data: The initial velocity of the car, V1 = 55 mi/h. The final velocity of the car, V2 = 70…

Q: During flow over a given slender body such as a wing, the lift force, the upstream velocity, and the…

A: Answer : The lift force depends upon Density of fluid Upstream Velocity Size, shape and orientation…

Q: A person extends his uncovered arms into the windy air outside at 1 atm and 60°F and 25 mi/h in…

A: Given data: The properties of air at 1 atm and 60 degrees Fahrenheit is

Q: The velocity profile for a turbulent boundary layer over a flat plate is to be approximated by the…

A: The given velocity profile is – The two boundary conditions for boundary layer flow is – From…

Q: Which parameter does not affect an earlier occurrence of the transition of Laminar flow to turbulent…

A: Laminar flow is the characteristics of flow that occurs when a fluid flows in parallel layers,…

Q: A 2-m-long, 0.2-m-diameter cylindrical pine log (density = 513 kg/m3) is suspended by a crane in the…

A: Given, The density of the log, ρ=513 kg/m3 The diameter of the log, D=0.2 m The length of the log,…

Q: During flow over a given body, the drag force, the upstream velocity, and the fluid density are…

A: Drag force is the resistive force exerted by a fluid due to its motion. Drag force is supposed to…

Q: What is flow separation? What causes it? What is the effect of flow separation on the drag…

A: Flow separation It is a process in which the boundary layer of the fluid detaches itself from the…

Q: A 2-m-long, 0.2-m-diameter cylindrical pine log(density =513 kg/m3) is suspended by a crane in the…

A: The related diagram is given as, The density of air is written as, The dynamic viscosity at 5 oC…

Q: Show the boundary layer development along the plate and define the characteristics of boundary layer…

A: Given:

Q: The drag coefficient of a vehicle increases when its windows are rolled down or its sunroof is…

A: Given data: The frontal area of the car, A = 18 ft2. Drag coefficient when the sunroof is closed,…

Q: What is necessary to increase the Lift to Drag ratio and its Maximum value?

A:

Q: Define the planform area of a body subjected to external flow. When is it appropriate to use the…

A: Planform area: Plan area of an object is taken as the planform area. The plan is the view of the…

Q: Consider a refrigeration truck traveling at 70 mi/h at a location where the air is at 1 atm and…

A: Given that,

Q: A 0.5 m x 2 m flat plate is towed at 5 m/s on a 2-mm-thick layer of SAE-30 oil at 38°C that…

A:

Q: (b) A smooth thin plate 10 m long and 1 m wide is placed in an air stream at 3 m/s with its length…

A: As per bartleby guidelines we are allowed to solve only 1st question if multiple questions are…

Q: A 2-m-high, 4-m-wide rectangular advertisement panel is attached to a 4-m-wide, 0.15-m-high…

A: Given data as per question wind speed = 150 km/h = 150/3.6 m/s width of  rectangular advertisement…

Q: An airplane is consuming fuel at a rate of 7 gal/ min when cruising at a constant altitude of 10,000…

A: Take the following assumptions. Standard atmospheric conditions exist. The settings of the plane…

Q: determined experimentally. If the frontal area of the car is 2 m?, and the force acting on the car…

A:

Q: What is the difference between streamlined and bluff bodies? Is a tennis ball a streamlined or bluff…

A: If bodies subjected to fluid,flow can be classified as sreamlined or bluff body. a body is said to…

Q: The passenger compartment of a minivan traveling at 50 mi/h in ambient air at 1 atm and 80°F is…

A: Given data *The speed of the minivan is V = 50 mi/h = 50 × 1.46667 ft/s = 73.3335 ft/s *The length…

Q: What is induced drag on wings? Can the induced drag be minimized by (1) long and narrow wings or (2)…

A: Given question? What is induced drag on wing?  Can it be minimized by wing shape?

Q: To reduce the drag coefficient and thus to improve the fuel efficiency, the frontal area of a car is…

A: Given data,

Fluid Dynamics

The study of the flow of gases and liquids, usually in and around solid surfaces, is known as fluid dynamics in physics and engineering. Fluid dynamics, for example, can be used to evaluate the movement of air through an airplane wing or the surface of a vehicle. It can also be used in ship design to increase the speed at which ships pass through water.