Fluid Mechanics: Fundamentals and Applications
4th Edition
ISBN: 9781259696534
Author: Yunus A. Cengel Dr., John M. Cimbala
Publisher: McGraw-Hill Education
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Chapter 15, Problem 17P
To determine
To sketch:
A coarse hybrid grid in the region given and advantages.
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Using diagrams/ illustrations, discuss the relationship between Dimensional Analysis and Dynamic and Geometric Similarity. You are to include purposes and applications of this principle.?
Chapter 15 Solutions
Fluid Mechanics: Fundamentals and Applications
Ch. 15 - A CFD code is used to solve a two-dimensional (x...Ch. 15 - Write a brief (a few sentences) definition and...Ch. 15 - What is the difference between a node and an...Ch. 15 - Prob. 4CPCh. 15 - Prob. 5CPCh. 15 - Prob. 6CPCh. 15 - Prob. 7CPCh. 15 - Write a brief (a few sentences) discussion about...Ch. 15 - Prob. 9CPCh. 15 - Prob. 10CP
Ch. 15 - Prob. 11CPCh. 15 - Prob. 13CPCh. 15 - Prob. 14CPCh. 15 - Prob. 15CPCh. 15 - Prob. 16PCh. 15 - Prob. 17PCh. 15 - Prob. 18PCh. 15 - Prob. 19PCh. 15 - Prob. 20PCh. 15 - Prob. 21PCh. 15 - Prob. 22PCh. 15 - Prob. 23PCh. 15 - Prob. 24PCh. 15 - Prob. 25PCh. 15 - Prob. 26PCh. 15 - Prob. 27PCh. 15 - For each statement, choose whether the statement...Ch. 15 - Prob. 45CPCh. 15 - Gerry creates the computational domain sketched in...Ch. 15 - Think about modem high-speed, large-memory...Ch. 15 - What is the difference between mulugridding and...Ch. 15 - Suppose you have a fair) comp1c geometry and a CFD...Ch. 15 - Generate a computational domain and grid, and...
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- Hello I am having trouble with this dynamics problem and can't figure out how to get the angular acceleration equaiton to angual velocity. How do I take that derivative?arrow_forwardFind speed of two points on a tire VANTI DAVANT DAVANT DAVANTE The diameter of a tire is 38 cm. When the tire is spinning at its maximum rate 300 rpm, What is the speed of yellow dot at distance of 15 cm ? And blue dot at 30 cm ? What do you conclude?arrow_forwardchoose whether the statement is true or false and discuss your answer briefly. Kinematic similarity is a necessary and sufficient condition for dynamic similarity.arrow_forward
- For each statement, choose whether the statement is true or false, and discuss your answer briefly: (a) The physical validity of a CFD solution always improves as the grid is refined. (b) The x-component of the Navier–Stokes equation is an example of a transport equation. (c) For the same number of nodes in a two-dimensional mesh, a structured grid typically has fewer cells than an unstructured triangular grid. (d ) A time-averaged turbulent flow CFD solution is only as good as the turbulence model used in the calculations.arrow_forwardomponents, desert ant Fig. 3-16a, starting from home. At the end of the fifth run, what are the magnitude and angle of the ant's net displace- ment vector dnet, and what are those of the homeward vec- tor dhome that extends from the ant's final position back to home? In a real situation, such vector calculations might involve thousands of such runs.arrow_forward1. In the figure shown below, choose whether the statement is true or false (Please justify your answer) (a) At a give x-location, if Re were to increase, the boundary layer thickness would decrease. (b) As upstream velocity decreases, so does the boundary layer thickness (c) As the kinematic viscosity increases, so does the boundary layer thickness (d) As the fluid density decreases, so does the boundary layer thickness (e) As the x-location increases, so does the boundary layer thicknessarrow_forward
- Consider a boundary layer growing along a thin flat plate. This problem involves the following parameters: boundary layer thickness ? , downstream distance x, free-stream velocity V, fluid density ? , and fluid viscosity ? . The number of primary dimensions represented in this problem is (a) 1 (b) 2 (c) 3 (d ) 4 (e) 5arrow_forwardThis exercise is part of a series of problems aimed at modeling a situation by progressively refining our model to take into account more and more parameters. This progressive approach is very close to whatwhat do professional scientists do! contextWe want to lower a suspended load in a controlled way, so that it hits the ground with a speed whose modulus is not too great. To slow down the descent, we added a resort behind the mass (A), Lasuspended load (B) is connected by a rope passing through a pulley to another mass (A), which slides on a horizontal surface with friction.InformationThe masses of loads A and B are known.The mass of the rope itself is negligible (very small compared to the loads).The pulley has negligible mass and can rotate without friction.Load B is initially stationary and is at a known height h.The surface on which mass A is placed is horizontal.There is friction under mass A: the kinetic friction coefficient u, is known.The rope attached to mass A is perfectly…arrow_forwardList the seven primary dimensions. What is significant about these seven?arrow_forward
- 3. Problem 4-31C: Consider the visualization of flow over a sphere in Fig. P4-31C. Are we seeing streamlines, streaklines, pathlines, or timelines? Explain. FIGURE P4-31c Visualization of flow over a sphere at a Reynolds number of 15,000. The visualization is produced by a time expo- sure of air bubbles in water. Courtesy of ONERA. Photo by Werle.arrow_forwardAn aircraft with a cruising speed of 750 km / h, at an altitude of about 11500 m.is progressing. The aircraft has a top view area of 160 m2 and a total mass of 80000 kg.given. Also, the air density at this altitude is about 0.3 kg/ms. airplane landingand uses double-slit wings for take off. However, while cruisingIt continues its flight by collecting its wings. NACA 23012 airfoilown aircraft;a) at the time of take-off and landing when the wings are extended and not extendedFind the safe lowest speeds required.b) determine the angle of attack required for continuous cruise at cruise altitude.c) the strength to provide the necessary thrust to overcome the resistance force coming upon it.calculate.(Air density on the ground is determined as 1.20 kg/m3.arrow_forwardThe Russian Typhoon-class submarine is 170 m long, witha maximum diameter of 23 m. Its propulsor can deliverup to 80,000 hp to the seawater. Model the submarine asan 8:1 ellipsoid and estimate the maximum speed, in knots,of this ship.arrow_forward
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