flow solver, Other Engineering

Assignment Help:

 Flow Solver

The flow solver of FP utilises data produced by the grid generator, together with data read from an input file named FLOW.DAT, and proceeds to calculate the solution to the exact (or full) potential equation of inviscid compressible flow in three dimensions, by a method of finite-differences. The solution algorithm uses repeated iterations with 'over-relaxation'. The speed of overall convergence is improved by the facility to perform the relaxation scheme on three different levels of grid fineness. The finest grid (level 1) corresponds to the grid as produced by the grid generator. The middle grid (level 2) has half the numbers of grid intervals in each of the three coordinates (r,η,θ) of those in level 1. The coarsest grid (level 3) has the same number of grid intervals in the r and directions as those of the middle grid, but half the number of grid intervals in the direction of those of the middle grid (i.e. one quarter the number of grid intervals of those of the finest grid). The user controls the number of relaxation iterations carried out on each grid by means of parameters in the input file FLOW.DAT. A batch of successive iterations on a particular level of grid is termed a step. A typical run commences with one or two coarse-grid steps, continues with a middle-grid step and concludes with one or more fine grid steps. Each step typically comprises one hundred or more iterations. Full convergence (when changes in the computed flow can no longer be detected) typically requires two thousand or more iterations. As well as specifying a particular number of iterations for a step, it is also possible to impose convergence criteria, and to make the termination of the run (or step) dependent on the satisfaction of these criteria.

 


Related Discussions:- flow solver

Propeller control, Propeller Control: There is no separate propeller co...

Propeller Control: There is no separate propeller control selector for this engine / propeller combination. Instead of a separate propeller control lever, the governor is desi

Zener diode, easy defination of zener diode nd its application and characte...

easy defination of zener diode nd its application and characteristics ?

True or false, Beta coefficients and standard deviation may be used as indi...

Beta coefficients and standard deviation may be used as indicators of risk

Risk Management, discuss the values of risk analysis and how it can help in...

discuss the values of risk analysis and how it can help in decision making of project management under conditions of uncertainty

Basic instrumentation system, A basic instrumentation system consists of a ...

A basic instrumentation system consists of a transducer, conditioning amplifier, and analog digital converter connected (in general) by analog and digital transmission lines.

Extractive metallurgy, differences between blast , reverbatory and electric...

differences between blast , reverbatory and electric furnaces

ALGORITHM, write an algorithm to find a number that multiplies your name 10...

write an algorithm to find a number that multiplies your name 10 times

Fluid mechanics, A body, with a volume of 2m^3, weights 40 kN. Determine it...

A body, with a volume of 2m^3, weights 40 kN. Determine its weight when submerged in liquid with S= 1.59.

Fire protection test, Go to https://blackboard.newhaven.edu/ user: user:...

Go to https://blackboard.newhaven.edu/ user: user:Aaldo6 Pass:1992May239645 Class: fire 2209 Occup safety$ hilt-fire take the test its one hour test multiple choices its due t

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd