What is the difference between control volume and control system?

A control volume is quite a specific concept – a region of space inside some closed surface. Control volume is almost always of finite dimensions and with well defined boundary. A system is a more general concept – a set of objects, usually sharing some property.

Why is it important to consider a controlled volume when dealing with fluid flow?

This concept of a control volume is also very useful in analyzing fluid flow problems. Once the control volume and its boundary are established, the various forms of energy crossing the boundary with the fluid can be dealt with in equation form to solve the fluid problem.

What is control volume approach?

In continuum mechanics and thermodynamics, a control volume (CV) is a mathematical abstraction employed in the process of creating mathematical models of physical processes. As a continuum moves through the control volume, the mass entering the control volume is equal to the mass leaving the control volume.

What is control volume and system in fluid mechanics?

As against the system, a control volume has a fixed boundary. Mass, momentum and energy are allowed to cross the boundary. We perform a balance of mass, momentum and energy that flow across the boundary and deduce the changes that could take place to properties of flow within the control volume.

Why do we need control volume?

A control volume approach generally concentrates on a particular volume and studies the fluid passing through it. For a continuous flow problems like a pipe flow or external flow situations, control volume approach makes more sense and it becomes almost impossible to do the same with a system approach.

What is the difference between system and control system?

In this combination, the output of the control system is adjusted automatically till we get the desired response. Hence, the closed loop control systems are also called the automatic control systems….Open Loop and Closed Loop Control Systems.

Open Loop Control Systems	Closed Loop Control Systems
Inaccurate.	Accurate.

Why do we need to control volume?

Can a control volume be a closed system?

A control volume can be seen as a fixed region across which mass and energy transfers are studied. The identity of mass in a control volume always changes unlike the case for a control mass system (closed system).

Is control volume system always an open system?

Therefore control volume is an open system with fixed boundaries or fixed volume on which our interest is focused for thermodynamic calculations whereas Any system that transfers both mass and energy irrespective of fixed or flexible boundary may be treated as anopen system.

What is control volume in fluid?

A fluid dynamic system can be analyzed using a control volume, which is an imaginary surface enclosing a volume of interest. The control volume can be fixed or moving, and it can be rigid or deformable.

Why control volume is called open system?

An open system is a system which allows transfer of both mass and energy over a fixed volume that is why it is called control volume,similary a closed system allows only transfer of energy not mass thats why it is called a control mass.

What is the importance of control system?

Control is one of the managerial functions like planning, organizing, staffing and directing. It is an important function because it helps to check the errors and to take the corrective action so that deviation from standards are minimized and stated goals of the organization are achieved in desired manner.