Computational fluid - Study guides, Class notes & Summaries

What is CFD? How does CFD work? correct answer: computational fluid dynamics: a set of numerical methods applied to obtain approximate solutions of problems of fluid dynamics and heat transfer. How it Works: - The flow is broken down (discretized) into elements that make up the mesh of the fluid domain Compare and contrast FEA and CFD. correct answer: Finite Element Analysis (FEA): - Model the solid domain (i.e. model the solid itself) - Ex. Model pipe and stress on the pipe Co...

What are unique characteristics about the Medical Device Industry correct answer: Heavily regulated by FDA, Third Party Payers, Potential liability, complex growing knowledge base What are the three different types of Customers for Medical Device Industry correct answer: Purchasers, Specifiers, Users Medical Device Industry: what are examples of 'purchasers' correct answer: Hospitals, clinics, modical offices Medical Device Industry: what are examples of 'Specifiers' correct answ...

Computer Aided Design (CAD) - correct answer Implementation of computers in the creation, modification,and optimization of a design. >Computer Aided Drafting >Computer Aided Modeling Computer Aided Machining (CAM) - correct answer Application of computers to the creation and assembly of physical components. Computer Aided Machining (CAM) "NC" - correct answer Numerical Control or Computer driven machine tools Computer Aided Machining (CAM) "RP/AM" - correct answer ...

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Numerical methods using digital computers are, of course, commonly utilized to solve a wide variety of flow problems. As discussed in Chapter 6, although the differential equations that govern the flow of Newtonian fluids [the Navier–Stokes equations (Eq. 6.127)] were derived many years ago, there are few known analytical solutions to them. However, with the advent of highspeed digital computers it has become possible to obtain approximate numerical solutions to these (and other fluid mechanic...

Pros and Cons of Experimental correct answer: Pros: -Realistic results for flight conditions in tunnel -Good for finding trends and correlating variables Cons: -Unable to match all real flight conditions (e.g. Mach and Reynolds) -Costly (equipment, manufacturing time) -tunnel corrections -Difficult to measure Pros and Cons of Theoretical correct answer: Pros: -General analytical expressions -Generally easy to use and fast to analyze Cons: -Require significant simplifying as...

"CFD" stands for correct answer: Computational Fluid Dynamics CFD and Computational Aerodynamics are different names for the same thing correct answer: False The four primary steps in the CFD process are (in order) correct answer: geometry modeling, grid generation, flow solution, post processing CFD methods are also known as "low-fidelity methods" correct answer: False CFD techniques may only be used to model air as the working fluid correct answer: False A properly writ...

"CFD" stands for ... correct answer: Computational Fluid Dynamics CFD and Computational Aerodynamics are different names for the same thing (True or False) correct answer: False The four primary steps in the CFD process are correct answer: geometry modeling, grid generation, flow solution, post processing CFD methods are also known as "low-fidelity methods" (True or False) correct answer: False FD techniques may only be used to model air as the working fluid (True or False) c...

dimensions correct answer: category that represents a physical quantity units correct answer: assigns a number so that the dimension can be measured m=v/c correct answer: mach number fluid power correct answer: technology that deals with the generation, control, and transmission of power using pressurized fluids specific weight correct answer: weight per unit volume nonhomogeneous correct answer: a fluid wherein density varies spatially homogeneous correct answer: incomp...

I. POTENTIAL MODELS The full Lennard-Jones potential, ULJ(r), is given by ULJ
r
4
  r  12   r  6  ,
1 where  and  are related to the diameter of LJ atoms and the strength of the interparticle interaction, respectively. The majority of reported MC simulations on the liquid/vapor interface are done for spherically truncated
ST potential UST
r
ULJ
r
Rr
 ULJ
r, rR 0, rR ,
2 while most MD simulations are developed for the spherically truncated force F...