Computational Fluid Dynamics Components Numerical Methods Online Exam Quiz
Computational Fluid Dynamics Components Numerical Methods GK Quiz. Question and Answers related to Computational Fluid Dynamics Components Numerical Methods. MCQ (Multiple Choice Questions with answers about Computational Fluid Dynamics Components Numerical Methods
Express the 2-dimensional continuity equation in cylindrical coordinates.
Options
A : frac{partial( ho v_r)}{partial r}+frac{1}{r}frac{partial( ho v_ heta)}{partial heta}+frac{ ho v_r}{r}=0
B : frac{partial( ho v_r)}{partial r}+frac{1}{r}frac{partial( ho v_ heta)}{partial heta}+ ho frac{v_r}{r}+frac{partial ho}{partial t}=0
C : frac{partial( ho v_r)}{partial r}+frac{1}{r}frac{partial( ho v_ heta)}{partial heta}+frac{partial ho}{partial t}=0
D : frac{partial( ho v_r)}{partial r}+frac{1}{r}frac{partial( ho v_ heta)}{partial heta}+ ho frac{v_r}{r}+frac{partial ho}{partial t}=0
While using a Finite Element Method, one has to approximate ____________
Options
A : boundary conditions
B : integrals at grid faces
C : derivatives at grid points
D : shape functions and weighting functions
Which is the first step in the numerical solution of a fluid flow problem?
Options
A : Discretization
B : Physical model of the flow
C : Mathematical model of the flow
D : Iteration
Which of these features of structured grids is a disadvantage?
Options
A : Easy to solve
B : Suitable for simple geometries
C : Efficient in memory requirements
D : Less time requirement
Choosing a particular type of discretization method is ineffective when ___________
Options
A : mathematical model is complex
B : mathematical model is simple
C : grid is coarse
D : grid is very fine
Which of these coordinates are not used in CFD?
Options
A : Orthogonal coordinates
B : Cartesian coordinates
C : Spherical coordinates
D : Number line
What does the mathematical model of a fluid flow contain?
Options
A : Partial differential equations
B : Discretized partial differential equations
C : Partial differential equations and boundary conditions
D : Discretized partial differential equations and boundary conditions
The mathematical model is based on ____________
Options
A : physical principles and assumptions
B : physical principles
C : flow model
D : flow model and assumptions
Each node has 4 nearest neighbours. This statement is correct for which of these grid types?
Options
A : Structured 2-D grids
B : Unstructured 2-D grids
C : Structured 3-D grids
D : Unstructured 3-D grids
Which of these grids are called Chimera grids?
Options
A : Structured grids with overlapping blocks
B : Block-structured grids
C : Block-structured grids with overlapping blocks
D : Structured grids
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