Mcq–Manometers It increases the in depth knowledge regarding Piezometer, different manometers and Bourdon tube gauge. A Piezometer is used to measure the pressure of a (a) Gas (b) Liquid (c) Gas as well as liquid (d) None (Ans: b) A Piezometer is used to measure (a) Vacuum pressure (b) High pressure (c) Vacuum as well […]
Manometers Manometer is an instrument which measures the pressure of a liquid or a gas while at rest. Types of Manometers (i) Simple manometer (ii) Differential manometer Simple Manometers (i) Piezometer (ii) U-tube manometer (iii) Single column manometer (Micro-manometer) Piezometer Piezometer tube is perhaps the simplest among the various pressure measuring devices and consists of a vertical […]
Compressible Flow NORMAL SHOCK IN A COMPRESSIBLE FLUID FLOW When the flow passes from a supersonic to subsonic in a SMALL distance, the velocity decreases suddenly and pressure rises sharply. This sudden pressure rise is a normal to the pipe surface and is called the NORMAL SHOCK. It happens only in a compressible flow (gas […]
FLUID KINEMATICS—-EQUATIONS OF FLUID MOTION Fluid motion equation use two approaches. (i) Integral approach–Not being dealt here. (ii) Differential approach Differential approach uses Control Volume method A control volume is a finite region having OPEN boundaries through which there is mass transfer, momentum transfer and energy transfer. Control volume method considers the followings aspects: a. […]
Stream Function, Velocity Potential and Cauchy Riemann Equations—-2 VELOCITY POTENTIAL Velocity Potential φ is a Scalar Function of space and time co-ordinates such that its NEGATIVE derivative with respect to any direction give the fluid velocity in that direction. Thus φ is a 3-D function. φ= f(x, y, z, t) For a steady flow φ= (x, […]
Stream Function, Velocity Potential and Cauchy Riemann Equations Stream function ‘ψ’ and velocity potential ‘φ’ are arbitrary fictitious parameters. These do not exist in actual practice. Fluid flow is a complex phenomenon. Thus these have been developed to understand complexity of fluid dynamics in a easy manner. STREAM FUNCTION It is the volume flux in the […]
Types of Fluid Flow-2 TABLE: Types of Fluid Flow Sr. No. Type of Flow Definition Application 1. One Dimensional Flow When two velocity components are negligible fully-developed flows in long uniform pipes and open-channels in which velocity is uniform across the pipe cross-section 2. 2-Dimensional When one velocity components is negligible flow past a […]
Types of Fluid Flow FLUIDS IN MOTION There are different types of flows for a moving fluid. The study of moving fluids is quite complex, tedious and time consuming. But the analysis can be made simple by making one or more simplifying assumptions e.g., one-dimensional flow, steady-state flow, non-viscous flow and in-compressible flow. More is […]
Vacuum Application VACUUM Vacuum is void. It is a space devoid of matter. It represents something short or vacant. But, in reality it is linked to pressure.It is a pressure below atmospheric pressure. Atmospheric pressure is 29.92 inches of Hg. Consider the following steps to understand vacuum. (i) Consider a bottle is open to atmosphere. […]
FORCE OF BUOYANCY FORCE OF BUOYANCY AND CENTER OF BUOYANCY Magnitude of the force of buoyancy = weight of liquid displaced by the immersed solid Direction of the force of buoyancy = Vertically upwards Center of buoyancy = Center of gravity of the displaced volume of the liquid EQUILIBRIUM OF FLOATING BODIES (i)Stable Equilibrium—When a […]