Which of the following statement is true? The laminar boundary layer is thicker than the turbulent boundary layer   The boundary layer thickness decreases as the distance along the surface increases   Shear stress is greater for the laminar boundary layer compared to the turbulent boundary layer   Laminar flow produces lower skin friction drag compared to turbulent flow

Q: Width velocity of 50 m/s. Determine the drag force acting on upper side of the plate when: Engine…

A: Engine oil at 40°C  L = 20 m  w = 3m   v= 50 m/s  Properties of engine oil at 40°C  ρ = 876 kg/m3, μ…

Q: 7. A flat plate has a length of 40 cm and width of 1 m. Air, at pressure of 2 atm, temperature of 57…

A:

Q: The form drag coefficient of a certain light aircraft is equal to 0.011. Its skin friction drag…

A: Solution: Given Data: CD,F=0.011CD,S=0.016CD,I=0.07CD,F+CD,SAR=7.01e=0.91   To Find: The…

Q: Janie likes to drive with a tennis ball on her car antenna. The ball diameter is D = 2.62 in and its…

A: We need to first determine the velocity of the car and the frontal area of the ball. It will help to…

Q: the transition point between laminar and turbulent flow A. the boundary layer gets thinner and the…

A: Handwriting.jpg

Q: A disk-gap-band parachute has a drag of 1600 lbf when tested at 15 mi/h in air at 20°C and 1 atm.…

A: Given data:-  Drag force =1600 lbf=7117.155 N Velocity =15 mi/h=6.7056 m/s The diameter of the…

Q: Question 2 a) A laminar boundary layer profile may be assumed to be approximately of the form u/U₁ =…

A: Step 1: First, let's write what is the given in the problem for better analysis.Step 2: Let's…

Q: the boundary layer

A: given:dynamic viscosity μ =1.79 x 10-5 kg/msvelocity V=37m/slength L=1.6m

Q: falls to earth at terminal velocity. Assume a hail ball (ice) falls into a warm layer of air at 1000…

A: Given: The altitude of warm layer, h = 1000 m The hail temperature, T = -20 C The surrounding…

Q: An aluminum canoe moves horizontally along the surface of a lake at 3.5 mi/h. The temperature of the…

A:

Q: A long 8cm diameter steam pipe whose external surface temperature is 90°C passes through some open…

A: The diameter of the steam pipe, D = 8cm=0.08 mThe external surface temperature, The air…

Q: When testing a new car, the car drives with a constant speed v = 140 km/h. The power of car’s engine…

A: Given data: The constant speed is of the car is v = 140 km/h. The power of car's engine is P = 120…

Q: The boundary layer formed as turbulent around the sphere is when ReD = 2.5*10^5 (a) Golf…

A: Re= 2.5×105Golf ball diameter, Dg= 43 mm= 0.043 mSoccer ball diameter, Ds= 222 mm= 0.222 m   Note:…

Q: Two definitions of displacement thickness are given in this chapter. Write both definitions in your…

A:

Q: When tested in water at 20°C flowing at 2 m/s, an 8-cm-diameter sphere has a measured drag of 5 N.…

A: Write the given data with suitable variables. vw=2 m/sds=8 cm=0.08 mFw=5 Nρw=998 kg/m3μw=0.001…

Q: Calculate the values of the Rx for the two parts of Example 17.1 shown below. Boundary layers on…

A:

Q: Zero Lift Drag Coeff

A: GIVEN:

Q: A skydiver jumps from (5.5000x10^3) m with no parachute into a giant net. The mass of the skydiver…

A: Given data Mass of skydiver = m = 1.05 x102 kg = 105 kg  Projected Area = A = 0.45 m2 Pressure = P =…

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 boat is equipped with two retractable rudders of width 0.75m and length 1m. The speed of the boat…

A: (3.1) Write the given data. A=lb=1 m0.75 m=0.75 m2v=120 km/h=120518=33.33 m/s Calculate the…

Q: The form drag coefficient of a certain light aircraft is equal to 0.02. Its skin friction drag…

A: Solution: Given Data: CD,F=0.02CD,S=0.009CD,I=0.08CD,PAR=6.9   To Find: Maximum lift-to-drag ratio.

Q: Wind flows over a flat plate of length L = 25 mm and width W = 8 mm. The plate is maintained at a…

A:

Q: Wind flows over a flat plate of length L = 25 mm and width W = 8 mm. The plate is maintained at a…

A:

Q: When the "Area rule" is applied, which aerodynamic coefficient it affects the most? O drag…

A: According to area rule two panes with same longitudinal cross sectional area distribution have same…

Q: u = a + by a) Evaluate 8/x b) Calculate the skin friction coefficient (Cf)

A: Given: The velocity of the flow: →u=a+by Where a and b will be constant and y will be the vertical…

Q: Fairings are attached to the front and back of a cylindrical body to make it look more streamlined.…

A: Drag forces arise from pressure differences over the body (due to its shape) and frictional forces…

Q: The car shown in the figure below moves at a constant speed on a highway and has a drag coefficient…

A:

Q: Joe recently opened a restaurant and bought a car that has a clean drag area CDA of 3.25 m² and…

A: To find: The fuel money required per year without advertising board and also find the additional…

Q: Calculate for the total drag coeffi given the equation CD = 0.002 + k(0.403) ^2. Given that the Oswa…

A:

Q: ing statements given about the laminar boundary layer on a flat plate are true or false. a) when…

A: given: Write in the boxes on the side that the following statements given about the laminar boundary…

Q: A delivery car carries a long sign on the top, which can be considered as a thin plate (thin in the…

A:

Q: ler angles of attack, which is associated wi Diffuser effect Дифузорно течение O a decrease in Lift…

A: Solution ;

Q: Bill gets a job delivering pizzas. The pizza company makes him mount a sign on the roof of his car.…

A: The Work drag  is        W=12ρairAV2CDL where    CD = 0.94 Average speed, V =45 mph…

Q: is the drag coefficient 2 or 0.2?

A: Yes from figure we can see that drag coefficient at 80000 is 0.2 not 2

Q: Two large fixed parallel planes are 12 mm apart. The space between the surfaces is filled with oil…

A:

Q: A 30-cm-diameter smooth ball of dėnsity Ppall = 210 kg/m³ is tied to an object on the bottom of a…

A: Given: The diameter of smooth ball, d = 30 cm The density of ball, ρball = 210 kg/m^3 The density of…

Q: ution in the boundary la elocity V was observed hen the power loss pe

A:

Q: Wind flows over a flat plate of length L = 25 mm and width W = 8 mm. The plate is maintained at a…

A:

Q: Determine the thickness at the end of the plate.

A: For laminar flow over flat plate;Boundary layer thickness at the end of the plateof the length L is…

Q: Expediting the transition of a boundary layer to turbulent will: Delay or prevent detachment. Will…

A: The transition of boundary layer to turbulent flow will cause these given things-

Q: Problem 1. A smooth plate with length L = 3.0 m and width b = 0.90 m moves through still air at STP…

A:

Q: The manufacturer of a car reduces the drag coefficient of the car from 0.38 to 0.33 as a result of…

A: Given data: The initial drag coefficient, cd1 = 0.38. The final drag coefficient, cd2 = 0.33. The…

Q: a) Air at 30°C (density=1.165 kg/m³, kinematic viscosity = 16x105 m²/s) flows over a flat plate at a…

A: According to question:- density of airρ=1.165kg/m3kinematic viscosity of airν=16×10-5m2/sfree-stream…

Q: from other websites solution, those are wrong solutions. The trailer travels at U = 39 mi/h. The…

A: The trailer travels at U = 39 mi/h. The air is still and has a temperature of 60°F. Assume the…

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.