In studying sand transport by ocean waves, A. Shields in1936 postulated that the threshold wave-induced bottomshear stress τ required to move particles depends on gravityg , particle size d and density ρ p , and water density ρ andviscosity μ . Find suitable dimensionless groups of thisthe problem, which resulted in 1936 in the celebrated Shieldssand transport diagram.

Q: Theory: (Optional) (Ref. Munson/Young/Okiishi A Brief Introduction to Fluid Mechanics, p.200-215)…

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Q: e peculiar fluid at very low ry is still a very import ons:

A: i) False: Viscous effects are present in an external flow for both stalled and installed aerofoil…

Q: The only possible dimensionless group that combines velocity V, body size L, fluid density p, and…

A: Write the dimensions of velocity  is .Write the dimensions of body size  is .Write the dimensions of…

Q: A block of wood (SG = 0.6) fl oats in fl uid X in Fig.such that 75 percent of its volume is…

A: Calculate the density of the fluid X. Weight of body = weight of fluid X displaced + weight of air…

Q: This exercise is part of a series of problems aimed at modeling a situation by progressively…

A: given; mass of A (mA)=80kgmass of B(mB)=65kgheight(h)=2.7mcoefficient of friction(μ)=0.21spring…

Q: (1) The size of a prototype can never be smaller than the size of a model. (True/False): (ii) The…

A: Step 1MOdel is the small scale of the actual structure.It is not necessary that models should be…

Q: By circle of mohr dij find: -main efforts [50 5 15 5 15] 20 10 MPC 10 20.

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Q: can someone explain why P is a function if time only for this question

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Q: Q3\ A. What are things that can be done to reduce your vehicles drag ( air resistance) B) 1. Viscous…

A: solution  (A):-  To reduce vehicle drag

Q: A fighter aircraft is to operate at 200 m/s in air at standard conditions ( = 1.2 kg/m3 ). A model…

A: GIVEN:-  velocity of aircraft : V=200m/sdensity of air : ρair=1.2kg/m3length ratio of model and…

Q: The output power W. of a spinning shaft is a function of torque T and angular velocity ? . Use…

A: Given Data: The torque acting on the shaft is The angular velocity of the shaft is ω. The output…

Q: sailing vessels can carry lead ballast such as bricks to keep the vessel properly oriented and…

A:

Q: A gas with density 1.3kg/m and dynamic viscosity 4air = 1.1 x 10-5Pa. s flows past a flat plate of…

A: Given:ρ=1.3 kg/m3μair=1.1*10-5 PaL=2.2 mB=1.2 mFs=1 N

Q: In a steady-state bakery process, cakes are fed on a conveyor belt through an “enrober" where melted…

A:

Q: Provide a research topic that is related to Fluid Mechanics. (For undergraduate Design Experimen

A: COMPUTATIONAL FLUID DYNAMICS   IS A IMPORTANT TOPIC FOR RESEARCH FIELD, IN THIS TIME THERE IS A LOT…

Q: Asap Find the whirling speed, Nc, (in cps) of a shaft 10 mm in diameter and 1.0 m long carrying a…

A:

Q: An airplane wing, with chord length of 1.5 m and span of 9 m, is designed to move through standard…

A: Air: ν1= 1.51×10-5 m2/sV1= 7.5 m/s Water: ν2= 1.00×10-6 m2/sV2= ? m/s Scale model= D2D1=110

Q: Particles in liquids achieve terminal speed very quickly. One can measure the time it takes for a…

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Q: A = A . [1-x/ (2 L) ] Densityp L

A: Take a strip of thickness dx at a distance x. Then the force acting on the strip is,…

Q: When fluid in a pipe is accelerated linearly from rest, itbegins as laminar flow and then undergoes…

A:

Q: We want to predict the drag force on a remote-control airplane as it flies through air having a…

A: Solution: Given Data: ρa=1.21 kg/m3μa=1.76×10-5 Pa-sVp=32 m/sD=75 mmρw=3 kg/m3μw=1.82×10-5 Pa-s…

Q: Mott ." cometer, which we can analyze later in Chap. 7. A small ball of diameter D and density p,…

A: The data given is, The specific gravity of steel ball, SGb = 7.87 The diameter of the steel ball, D…

Q: How does the field of fluid dynamics play a critical role in the design and optimization of…

A: The design and optimisation of aerodynamic structures for aerospace applications, notably the…

Q: A graduated cylinder full of water in the lab on a bench that has just been waxed. The cylinder is 1…

A: Given, Area of the cylinder, A=1cm2 Height of water, h=10cm

Q: problem: A ship of (120 m) long moves through a fresh water (p = 1000 Kg/m³, µ = 1.14*103 Pa.s) at a…

A: For complete dynamic similarity, the Reynolds number and Froude number are matched. The Reynolds…

Q: The Greenland ice sheet extends 1.7e12 m², and average 2,100 meter thick. The area of the world…

A:

Q: A spar buoy is a buoyant rod weighted to fl oat and protrudevertically, as in Fig.  It can be used…

A: According to Principal of flotation for a body floating in equilibrium: " Weight of the body…

Q: In a steady-state bakery process, cakes are fed on a conveyor belt through an “enrober" where melted…

A:

Q: Ah Assignment: The losses per unit length of pipe in tubulent flow through smnooth pipe depend ipon…

A: ∆hL=f V, D, g, μ, ρ

Q: Q3\ A. What are things that can be done to reduce your vehicles drag ( air resistance) В) 1. Viscous…

A: solution (A):-

Q: A football, meant to be thrown at 60 mi/h in sea-level air( ρ = 1.22 kg/m 3 , μ = 1.78 E-5 N ? s/m 2…

A: Given: The velocity of the prototype is VP=60 mi/h. The density of the prototype is ρ1=1.22 kg/m3.…

Q: Q1 Fluid Mechanics - Buckingham π Theorem Develop a step-by-step organization…

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Q: The drag force FD on a cylinder of diameter d and length l is to be studied. What functional form…

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Q: Ve A river bed is covered with a layer of small stones as shown in the figure. The diameters of…

A:

Q: By dimensional analysis, obtain an expression for the drag force (F) on a partially submerged body…

A: Given Force = F Velocity = u Length = L Roughness = e Density of fluid = p Gravitational…

Q: Define and briefly explain the_terms listed below, support your elaboration with mathematical…

A: Required: 1. Viscous flow, inviscid flow, compressible and incompressible flow2. Laminar flow,…

Q: A baseball is thrown directly upward (in z direction) from the ground (z = 0) with some initial…

A: When a baseball is thrown vertically upward with initial velocity then it goes up to a certain…

Q: Can we use the Buckingham pi theorem to prove that the Froud number is dimensionless? Could someone…

A: yes, we use the Buckingham pi theorem to prove that the Froud number is dimensionless

Q: A 5 m of ship model is towed in the water of kinemetic viscosity 1x10^-6 m^2/s at 3.5 m/s. The…

A:

Q: A 20 cm “golf" ball (with external roughness of a golf ball) is thrown into water. It has a mass of…

A: Given data  Diameter of the ball, d=20cm =0.20m Mass of the ball, m=8Kg The velocity of the ball,…

Q: P6.2 A 1:80 scale model of an aircraft was tested in air at 20C°moves with speed 40m/s a- What is…

A: Given, The velocity of the prototype in air, The kinematic viscosity of air, The kinematic…

Q: 1. Viscous pressure drag: drag due to surface roughness (T\F) 2.)- in front of the trunk of car. 3.…

A: According to the details provided in the question, we need give T/F

Q: In Falling ball Viscometer, the density of the ball is p=7746.8 kg/m and its radius is 4 mm, the…

A: in a falling ball viscometer there is an equilibrium achieved between Gravitational pull, buouancy…

Q: Figure  shows the flow of water over a dam. Thevolume fl ow Q is known to depend only on crest width…

A: As the discharge depends on the crest width B, acceleration due to gravity g and the height H.…

Q: The force required to tow a 1:30scale model of a motor boat in a lake at a speed of 2m/s is 0.5 N,…

A: Given the force required to tow a 1:30 scalemotorboat speed= 2m/sForce = 0.5NLet's Assume that the…

Properties of Fluids

The term fluid represents a type of substance that can easily change its shape under any external pressure/force and can flow. Fluids can acquire any shape in which it is stored and can resist normal stresses but cannot resist shear stress in rest condition. Whenever external shear stress is applied to fluids, it starts to flow. The fluids may be liquid or gas. Example- water, air, etc.