## Who is Navier?

Claude-Louis **Navier** (10 February 1785 in Dijon – 21 August 1836 in Paris) born Claude Louis Marie Henri **Navier**, was a French engineer and physicist who specialized in mechanics. The **Navier**-Stokes equations are named after him and George Gabriel Stokes.

## What is equation of fluid motion?

FS = ∫S t dS. (2) where S is boundary of Ω(t). as **flow** energy, all per unit mass. Therefore the Bernoulli **equation** can be viewed as ”conservation of mechanical energy principle”.

## What is difference between steady and unsteady flow?

**steady**: A **steady flow** is one in which the conditions (velocity, pressure and cross- section) may differ from point to point but DO NOT change with time. **unsteady**: If at any point **in the** fluid, the conditions change with time, the **flow** is described as **unsteady**.

## What are the types of fluid flow?

**The different types of fluid flow are:**

- Steady and Unsteady
**Flow**. - Uniform and Non-Uniform
**Flow**. - Laminar and Turbulent
**Flow**. - Compressible and Incompressible
**Flow**. - Rotational and Irrotational
**Flow**. - One, Two and Three -dimensional
**Flow**.

## What is hydrodynamics?

: a branch of physics that deals with the motion of fluids and the forces acting on solid bodies immersed in fluids and in motion relative to them — compare hydrostatics.

## What is hydrodynamics in swimming?

**Swimming Hydrodynamics** It is created due to the difference in the pressure exerted by the water at different depths. ... The **swimmer** pushes the water backwards and the water exerts a force in the forward direction.

## Why is hydrodynamics important?

2.

## What is kinematic flow?

The **kinematics** of a **flow** describes the motion of the fluid without taking into account the forces that cause this motion. The goal of **kinematics** is to describe the dependence of the motion of the fluid elements on time for a given velocity field.

## Is laminar a flow?

**Laminar flow**, type of fluid (gas or liquid) **flow** in which the fluid travels smoothly or in regular paths, in contrast to turbulent **flow**, in which the fluid undergoes irregular fluctuations and mixing.

## What is difference between kinematics and dynamics?

**Kinematics** is the study of motion without regard to forces that cause it; **dynamics** is the study of motions that result from forces.

## How do you get stagnation points in flow field?

Given a velocity **field**, we can **find** possible **stagnation points** by equating the velocity components to zero and solving for x and y .

## What is stagnation conditions?

In fluid dynamics, a **stagnation** point is a point in a flow field where the local velocity of the fluid is zero. **Stagnation** points exist at the surface of objects in the flow field, where the fluid is brought to rest by the object.

## What does stagnation mean?

**Stagnation is** a prolonged period of little or no growth in an economy. ... **Stagnation** can occur as a temporary condition, such as a growth recession or temporary economic shock, or as part of a long-term structural condition of the economy.

## What is Bernoulli's equation used for?

The **Bernoulli equation** is an important expression relating pressure, height and velocity of a fluid at one point along its flow. The relationship between these fluid conditions along a streamline always equal the same constant along that streamline in an idealized system.

## What is Z in Bernoulli's equation?

where u is the velocity, P is the pressure and **z** is the height above a predetermined datum. This **equation** expresses the conservation of mechanical work-energy and is often referred to as the incompressible steady flow energy **equation** or, more commonly, the **Bernoulli equation**, or **Bernoulli's theorem**.

## Can you use Bernoulli's equation for turbulent flow?

Secondly, **turbulent flows** are inherently unsteady, and thirdly, it is not possible to identify streamlines in a **turbulent flow**, because they all get tangled up in the highly complex mixing eddies. So, no, **you** cannot **use Bernoulli's Equation** for a **turbulent flow**.

## What is head in Bernoulli equation?

The “**head**” form of the Engineering **Bernoulli Equation** is obtained by dividing the energy form throughout by the magnitude of the acceleration due to gravity, g .

## How do I calculate flow rate?

Q=Vt Q = V t , where V is the volume and t is the elapsed time. The SI unit for **flow rate** is m3/s, but a number of other units for Q are in common use. For example, the heart of a resting adult pumps blood at a **rate** of 5.

## Is pressure related to flow rate?

Higher **pressure** differences will drive greater **flow rates**. The **pressure** gradient establishes the direction of **flow**. **Flow** is different than **velocity**.

## How do you calculate velocity and flow rate?

**Flow rate** Q is defined to be the volume V **flowing** past a point in time t, or Q=Vt where V is volume and t is time. The SI unit of volume is m3. **Flow rate** and **velocity** are related by Q=A¯v where A is the cross-sectional area of the **flow** and v is its average **velocity**.

## How is flow rate and water pressure measured?

Take the amount of **water** in the jug in litres (e.g. 0.

## Is flow rate directly proportional to pressure?

**Flow rate** Q is **directly proportional** to the **pressure** difference P2−P1, and **inversely proportional** to the length l of the tube and viscosity η of the fluid. **Flow rate** increases with r4, the fourth power of the radius.

## What is the difference between water pressure and flow rate?

**Pressure**, **Flow** & Your Plumbing System When you get right down to it, the easiest way to describe the **difference between water flow** and **water pressure** is that **water flow** is how much **water** comes out of your pipes while **water pressure** is how hard it comes out of your pipes.

## Does restricting flow increases pressure?

It will take longer to fill, because your thumb has reduced the **flow**! The same thing would happen in your sprinkler system if you used smaller pipe to **increase** the **pressure**. The smaller pipe would **restrict** the **flow** of water. The reduced **flow** would reduce the **pressure** loss in the pipes, resulting in more **pressure**.

## What is the relationship between pressure drop and flow rate?

**Pressure drop** is comparative to volumetric **flow rate** under laminar **flow** conditions. When the **flow rate** is double, there is double the **pressure drop**. **Pressure drop** decreases when common mode **pressure** increases. **Pressure drop** increases as the square of the volumetric **flow rate** under turbulent **flow** conditions.

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