Fluid Dynamics Physics Homework Help

Get Best Fluid Dynamics Homework Help

Learn equations of fluid dynamics by getting round-the-clock homework assistance from top Physics solvers.

Top Questions

What is Fluid Dynamics?


Fluid is a substance that can flow. And, dynamics refers to the study of motion under the effect of forces. So, fluid dynamics is concerned with the motion of fluid under the action of forces



Equation of Continuity

It tells us a relationship between the speed of flow and the cross-sectional area of the channel or tube.

= constant

The discharge (Q) will remain constant throughout the tube. A decrease in the cross-sectional area (A) would increase the speed of flow (v). 


Bernoulli's Equation

In an ideal fluid, applying the principle of conservation of mechanical energy leads to Bernoulli's Equation.

= constant

At every point on the flow tube, the sum of pressure, kinetic energy density, and potential energy density would remain constant.



Fluid Dynamics Questions & Answers – Sample


Question 1: A uniform cylindrical tube has a cross-sectional area (A) of . If, the discharge (Q) is . Calculate the velocity (v) of the fluid.

Explanation: Using the equation of continuity: 

Final answer: The velocity of the fluid would be .


Question 2: The inlet cross-sectional area of a tube is , and the outlet cross-sectional area is .  If, the fluid entering on the tube with a velocity of . Calculate the velocity of the fluid at the outlet.

Explanation: The discharge at the inlet and at the outlet would remain the same. Rewrite the equation of continuity to get the velocity at the outlet. 


Given: , . And,




Final answer: The velocity at the outlet would be .


Question 3: A cylindrical water tank has a height of . Initially, the tank was completely filled with water. A small hole with a cross-section area of is made at the side of the tank at the bottom. Find the speed of water from the hole at the bottom level.

 Explanation: We will apply Bernoulli's Equation between the top of the tank and the bottom of the tank. Also, there is no external pressure, and .

Final answer: The speed at the bottom side would be .



Build a strong foundation on fluid dynamics concepts, definition, movement and motion with TutorEye homework Help



Fluid dynamics stands for the flow of liquids or refers to that branch of applied science that deals with the movement of gases and liquids. 

Before you ponder over questions of viscosity, thickness or fluid’s flow when dealing with an assignment, be sure to get step-by-step explanations from our top Physics experts.

Our homework solvers understand the importance of an ‘A+’ grade for a high schooler and what a difference it can make to seek an admission to the college of your choice.  Therefore, our homework assistance services are here to resolve queries and clear doubts by making you understand the dynamics of fluids.

Get ready to cover key points or theoretical problems related to fluid dynamics equations. Let’s solve whether “air is a fluid” or “ what does fluid mean?” Yes, our highly qualified subject specialists have an answer for your every Physics query.

Avail stepwise solutions to further your understanding on the subject and make sure your basics are clear when you revise the topic.

We’ll examine the role of pressure differences, gravity and surface stresses that make fluids move. Simply rely on our Physics specialist to help you figure out the computational part of the problems.



Hire a Physics Homework Helper now!



How to take help on fluid mechanics from a top expert?

To get a 100% original Physics assignment with detailed steps on fluid flow; citing definitions and answering the most searched question “what is dynamics?”- we are here to help you.

Follow few simple steps to get assignment help:

Step 1: Upload your fluid motion questions by filling out your homework requirements on our quick help for

Step 2: Select an expert based on mutually agreed upon budget and deadline 

Step 3: Release payment from escrow after reviewing your assignment.

Rest assured, we ensure the highest quality of delivered assignments along with detailed instructions to assist your homework needs.

Our work is 100% plagiarism free and you will receive a draft that has no copyright infringements. With the help of our helpers accelerate your academic journey and score big in Physics.



Frequently Asked Questions



What are the main principles of fluid dynamics?

The basic principle of fluid dynamics is the equation of continuity.

It tells us a relationship between the speed of flow v, and the cross-sectional area A, and the discharge Q, of the channel or tube.

Q=AV =constant


What is fluid dynamics used for?

Fluid dynamics is used to study the motion of the fluid under the pressure. Some real-life technological applications of fluid dynamics can be seen in turbines, wind turbines, air conditioning, oil and gas pipelines.


Why is fluid dynamics so hard?

Fluid dynamics is considered an important topic in fluid mechanics. We study the behavior of liquid and gas under the action of pressure.

Since liquid and gas has not a definite shape, when they flow, it becomes difficult to represent the flow using equations. Hence, some assumption needs to be made. 

If someone is good at Differential Equations, Multivariable Calculus, Tensor Analysis, I think they will not consider fluid dynamics so hard.


How difficult is fluid dynamics?

I think this depends upon how much you understand the mathematical equations used in fluid dynamics.

We study laminar flow at the beginning of fluid dynamics, and we assume the fluid is ideal. So, the mathematical equations used for them are comparatively easy.

Then we study the turbines. This part of fluid dynamics involves different equations for different turbines. So, here we have more equations.

When we study turbulent flow, unsteady flow, discretization, etc. You may see some advanced mathematical equations. This part of fluid dynamics is comparatively hard.


What are the different types of fluid flow?


  • Ideal Fluid: The viscosity is zero, and density does will remain constant.


  • Real Fluid: It has viscosity, and density varies across the flow. 


  • Newtonian Fluid: The fluid which follows Newton’s law of viscosity.


  • Non-Newtonian Fluid: The fluid which does not follow Newton’s law of viscosity.


  • Compressible Flow: It has variable density, and viscosity can be greater than or equal to zero.


  • Incompressible Flow: It has a constant density, and viscosity can be greater than or equal to zero.


    What is the difference between fluid mechanics and fluid dynamics?

    Under fluid mechanics, we study the behavior of fluid and force on them. Fluid can be at rest or at motion.

    However, under fluid dynamics, we study the fluid flow under pressure. In this section, fluid will be in motion. This is a sub-part of fluid mechanics.



    Get in touch with a Physics solver today!