Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Mechanical Engineering Expert

problem 1)a) Derive the governing equation for conservation of mass using Divergence theorem

b) Consider the following steady three dimensional velocity field in Cartesian co-ordinates: V‾= (u,v,w)

= (axy² –b)i+cy³j+dxyu‾, where a, b, c are constants. Under what conditions this flow field is in compressible.

problem 2)a) Describe the concept of stress tensor.

b) Consider steady incompressible, laminar flow of a Newtonian fluid in the narrow gap between two infinite parallel plates. The top plate is moving at speed V, and the bottom plate is stationary. The distance between two plates is ‘h’, and gravity acts in negative z-direction. There is no applied pressure other than hydrostatic pressure due to gravity. Compute the velocity and pressure fields and estimate shear force per unit area acting on the bottom plate.

problem 3)a) Derive Navier stokes equation for incompressible, isothermal flow.

b) Consider the steady two dimensional, incompressible velocity field, V‾= (u,v) = (ax+b)i‾+ –ay+c)j‾, where a , b , c are constants. Compute the pressure as a function of x and y

problem 4)a) Air moves over a flat plate with a uniform free stream velocity of 10m/s. At a position 15 cm. away from the front edge of the plate, what is the boundary layer thickness? Use a parabolic profile in the boundary layer.
For air v = 1.5 ×10–5m²/s and Rho = 1.23 kg/m³.

b) Air moves over a 10m long flat plate. The transition from laminar to turbulent flow takes place between Reynolds numbers of 2.5 ×106 and 3.6 ×106. What are the minimum and maximum distance from the front edge of the plate along which one expect laminar flow in the boundary layer? The free stream velocity is 30 m/s and v = 1.5 ×10–5 m²/s

problem 5)a) Describe Prandtl’s mixing length hypothesis.

b) Air flows over a smooth flat plate at a velocity of 4.4 m/s. The density of air is 1.029 kg/m³ and v = 1.35×10–5 m²/s. The length of the plate is 12m in the direction of flow. Compute

i) the boundary layer thickness at 16cm and 12m respectively, from the leading edge and

ii) the drag co-efficients for the entire plate surface (one-side) considering turbulent flow

problem 6)a) How the fluid velocity varies with flow area in a isentropic flow. Describe.

b) What are the property relations for isentropic flow of ideal gases? Describe their significance.

problem 7)a) Air enters a converging-diverging nozzle of a supersonic wind tunnel at 1MPa and 300K. with a low velocity. If normal shockwave occurs at the exit plane of nozzle at Ma = 2, find out the pressure, temperature. Mach number, velocity and stagnation pressure after the shockwave.

b) demonstrate that the point of maximum entropy on the Fanno line for the adiabatic steady flow of a fluid in duct corresponds to sonic velocity Ma = 1

Mechanical Engineering, Engineering

  • Category:- Mechanical Engineering
  • Reference No.:- M95694

Have any Question? 


Related Questions in Mechanical Engineering

An electrical motor is used to operate a carnot

An electrical motor is used to operate a Carnot refrigerator with an interior temperature of 0.00°C. Liquid water at 0.00°C is placed into the refrigerator and transformed to ice at 0.00°C. If the room temperature is 300 ...

A cylindrical pressure vessel of 120 in outside diameter

A cylindrical pressure vessel of 120 in outside diameter, used for processing rubber, is 36 ft long. If the cylindrical portion of the vessel is made from 1 in thick steel (E = 29 × 10 6 psi, ν = 0.25) plate and the vess ...

1 draw the moment diagram for the elbow-biceps-forearm-hand

1. Draw the moment diagram for the elbow-biceps-forearm-hand system and determine the magnitude and location of the maximum moment. 2. How do the magnitudes of the biceps force B and joint reaction J change if the total ...

Using the information given in problem and the properties

Using the information given in Problem and the properties of the standard atmosphere given in Appendix G, estimate the number of molecules per cubic inch at an altitude of 250,000 ft. Problem:- The number of molecules cr ...

Calculate the second-order correction to the energy for the

Calculate the second-order correction to the energy for the system described in Problem 6.4 and calculate the ground-state wavefunction. Account for the shape of the distortion caused by the perturbation.

1 the pump shown in the figure delivers water at 59degf at

1. The pump shown in the figure delivers water at 59°F at a rate of 550 gal/min. The inlet pipe has an inside diameter of 5.95 in. and it is 10 ft long. The inlet pipe is submerged 6 ft into the water and is vertical. Es ...

1 what is a design inequality2 how is the usual design

1. What is a design inequality? 2. How is the usual design inequality modified to account for statistical variability? 3. What is a load factor? A load effect? A resistance factor? 4. What is a limit-states design?

The solution to problem isshow that bernoullis equation

The solution to Problem is Show that Bernoulli's equation applied between sections 1 and 2 does not give this result. Derive all expressions for the change in total head across a hydraulic jump. Problem:- As can often be ...

List three ways to control preload directly what are the

List three ways to control preload directly ? What are the advantages of a bonded ultrasonic transducer? What is sometimes cited as a disadvantage? Can torque be used to tighten a 6 in. diameter bolt? If not, why not? Na ...

How is that process-that curve-modified if this is a sheet

How is that process-that curve-modified if this is a sheet metal joint? Do variations in friction between male and female threads affect the torque-turn relationship? Describe the turn-of-nut procedure used in structural ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro