What is Mach Number and importance of Mach Number? The ratio of velocity of fluid, in an undisturbed stream, to the velocity of sound wave, is known as Mach number. It gives us an important information about the type of flow. In general, the flow of a fluid is divided into the following four types depending upon…
Motion of Two Bodies Connected by a String over a pulley on different planes. Consider a light inextensible string passing over a smooth pulley, as shown in Fig. 1.25, so that the tension (T) in both the strings is same. Let mass m1 is greater than mass m2. Since the string is inextensible, the upward acceleration…
Which is the Most Economical Section of a Channel in Fluid Mechanics? Discussion about most economical section in rectangular channel, trapezoidal channel, triangular channel is given below. A channel is said to be most economical if ● It gives maximum discharge for a given cross -sectional area and bed shape, ● It has minimum wetted perimeter, and ● It involves…
Newton along with his three laws of motion, Newton published the law of gravitation in 1687. According to Sir Isaac Newton, “every particle of matter in the universe attracts every other particle with a force that is directly proportional to the product of the masses of the particles and inversely proportional to the square of the distance…
What are Notches and Weirs? A notch may be defined as an opening provided in the side of a tank or vessel such that the liquid surface in the tank is below the top edge of the opening. It is generally made of a metallic plate. It is used for measuring the rate of flow…
An open cycle gas turbine, in its simplest form, as shown in Fig. 5.16, consists of a compressor, combustion chamber and a gas turbine which drives the generator and compressor. In this turbine, the air is first sucked from the atmosphere and then compressed adiabatically (generally in a rotary compressor) and then passed into the…
According to Newton’s law of viscosity, the shear stress on a layer of a fluid is directly proportional to the rate of shear strain. Ideal fluid is a fluid with zero viscosity. Real fluids possess viscosity. The following important points may be noted for viscous flow: (a) A fluid which has no viscosity is known as…
Types of Forces Present in a Moving Liquid – The important forces present in a moving liquid are Inertia Force, Viscous Force, Gravity Force, Surface Tension Force, Pressure Force and Elastic Force. (a) Inertia force: It is the product of mass and acceleration of the flowing liquid. (b) Viscous force: It is the product of shear stress…
Flow Through Open Channels – Describe the flow of a fluid through open channel. What is the formula to calculate flow and discharge through open channel. According to Chezy formula, the mean velocity of liquid, where C = Chezy’s constant, A = Area of flow, m = Hydraulic mean depth = Area of flow (A) / Wetted perimeter (P) =…