The relationship between the rate of heat transfer per unit area \(\dot{q}_s\)=-(k∇T). Where, k is a scalar value of thermal conductivity and ∇T is the gradient of temperature. Which of these following is wrong according to the above equation?

Heat transfer is different in different directions

The rate of heat transfer depends upon the temperature gradient

Heat transfer is in the opposite direction of increasing temperature

k is the proportionality constant

Explore topic-wise MCQs in Computational Fluid Dynamics Questions and Answers.

This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your Computational Fluid Dynamics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.	In the general transport equation, ϕ is the flow property. To get the energy equation out of this general equation, which of these variables cannot be used?
A.	v
B.	T
C.	h0
D.	i
Answer» B. T

Discussion

2.	The relationship between the rate of heat transfer per unit area \(\dot{q}_s\)=-(k∇T). Where, k is a scalar value of thermal conductivity and ∇T is the gradient of temperature. Which of these following is wrong according to the above equation?
A.	Heat transfer is different in different directions
B.	The rate of heat transfer depends upon the temperature gradient
C.	Heat transfer is in the opposite direction of increasing temperature
D.	k is the proportionality constant
Answer» B. The rate of heat transfer depends upon the temperature gradient

Discussion

3.	The rate of change of energy in a moving model is \(\rho\frac{De}{Dt}\). In the final equation, this term is reduced to \(\frac{\partial(\rho e)}{\partial t}+\nabla.(\rho e\vec{V})\). Which of these equations is used for this reduction?
A.	Equations of state
B.	Stress-strain equation
C.	Momentum equation
D.	Continuity equation
Answer» E.

Discussion

Explore topic-wise MCQs in Computational Fluid Dynamics Questions and Answers.

In the general transport equation, ϕ is the flow property. To get the energy equation out of this general equation, which of these variables cannot be used?

The relationship between the rate of heat transfer per unit area \(\dot{q}_s\)=-(k∇T). Where, k is a scalar value of thermal conductivity and ∇T is the gradient of temperature. Which of these following is wrong according to the above equation?

The rate of change of energy in a moving model is \(\rho\frac{De}{Dt}\). In the final equation, this term is reduced to \(\frac{\partial(\rho e)}{\partial t}+\nabla.(\rho e\vec{V})\). Which of these equations is used for this reduction?