Question: What Is Source And Sink Flow?

When velocity potential φ is constant it is called as?

A line along which ϕ has a constant value is called equipotential line, and on this line, because dϕ = 0 and the inner product of both vectors of velocity and the tangential line is zero, the direction of fluid velocity is at right angles to the equipotential line..

What is the characteristic of stagnation point?

Stagnation points exist at the surface of objects in the flow field, where the fluid is brought to rest by the object. The Bernoulli equation shows that the static pressure is highest when the velocity is zero and hence static pressure is at its maximum value at stagnation points.

What is steady uniform flow?

Steady uniform flow is a type of flow in which the conditions of flow do not alter with regard to time at any given point on the passage. Example. Water flowing through a tube of equal diameter with constant velocity.

What is source flow?

Source flow is defined as the two-dimensional flow coming from a point called source and moving out radially on a plane in a uniform rate. … From source, fluid is flowing radially in all direction of plane. The strength of the source, q is defined as the volume flow rate per unit depth of fluid.

What is a doublet flow?

Doublet (potential flow), fluid flow due to a source–sink combination.

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 flow past a Rankine oval body?

Figure 4.26: Flow past a Rankine Oval When the streamlines for this flow are plotted (Fig.4.26) one discovers that the one given by (shown in red) forms a closed curve. This obviously forms the “body”, i.e., the stream function we have written describes the flow about this body.

What is an example of steady 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. … Conditions do not change with position in the stream or with time. An example is the flow of water in a pipe of constant diameter at constant velocity.

What is the difference between laminar and turbulent flow?

Laminar flow or streamline flow in pipes (or tubes) occurs when a fluid flows in parallel layers, with no disruption between the layers. … Turbulent flow is a flow regime characterized by chaotic property changes. This includes rapid variation of pressure and flow velocity in space and time.

What is meant by potential flow?

In fluid dynamics, potential flow describes the velocity field as the gradient of a scalar function: the velocity potential. … In the case of an incompressible flow the velocity potential satisfies Laplace’s equation, and potential theory is applicable.

What is it called when both the source and sink are of equal strength?

DoubletExplanation: Doublet is the special case of source and sink with equal strength.

Which is the cheapest device for measuring flow discharge rate?

OrificemeterExplanation: Orificemeter is the cheapest available device for measuring flow/discharge rate. 2. The principle of Orificemeter is same as that of Venturimeter.

What are the two types of flow?

Types of Fluid Flow Fluid flow is generally broken down into two different types of flows, laminar flow and turbulent flow. Laminar flow is fluid motion in which all the particles in the fluid are moving in a straight line.

What is steady flow?

A steady flow is the one in which the quantity of liquid flowing per second through any section, is constant. This is the definition for the ideal case. True steady flow is present only in Laminar flow. In turbulent flow, there are continual fluctuations in velocity. Pressure also fluctuate at every point.

Which method is used exclusively in fluid mechanics?

Eulerian approachExplanation: In Fluid Mechanics, the matter of concern is the general state of motion at various points in the fluid system (as in Eulerian approach) rather than the motion of each particle (as in Lagrangian approach). Hence, the Eulerian method is extensively used in Fluid Mechanics.

How is flow around a half body obtained?

Flow around a half-body is obtained by the addition of a source to a uniform flow.

What are the different types of 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 uniform flow?

: flow of a fluid in which each particle moves along its line of flow with constant speed and in which the cross section of each stream tube remains unchanged — compare steady flow.