What is YC in fluid mechanics? Question: Fluid Mechanics Yr = Yc + (Ixc / Yc*A) where Ixc is the inertia of the surface about the x-axis, Yc is the depth submerged from the center of gravity, A is the surface area.
What is HC in fluid mechanics? where γ is the specific weight of the fluid [F/L3], hc is the vertical distance from the liquid surface to the centroid of the planar area on which the pressure distribution is acting [L], and A is Page 4 the area of the planar surface on which the pressure distribution is acting [L2].
What is the principle of continuity equation? Continuity principle, orcontinuity equation, Principle of fluid mechanics. Stated simply, what flows into a defined volume in a defined time, minus what flows out of that volume in that time, must accumulate in that volume. If the sign of the accumulation is negative, then the material in that volume is being depleted.
Where does the hydrostatic force act? In static condition, forces due to hydrostatic pressure from water will act on the walls of the retaining structure.
What is YC in fluid mechanics? – Related Questions
Which method is used exclusively in fluid mechanics?
Explanation: 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.
What is Newtonian law of viscosity?
Newton’s law of viscosity defines the relationship between the shear stress and shear rate of a fluid subjected to a mechanical stress. The ratio of shear stress to shear rate is a constant, for a given temperature and pressure, and is defined as the viscosity or coefficient of viscosity.
What is the equation of continuity in fluid flow?
In fluid dynamics, the continuity equation states that the rate at which mass enters a system is equal to the rate at which mass leaves the system plus the accumulation of mass within the system. ∂ρ ∂t + ∇. (ρ q)=0.
Which is are the conservation laws that are enough to solve a complete fluid problem?
Which is/are the conservation laws that are enough to solve a complete fluid problem? Explanation: A complete fluid flow problem can often be solved by only using the mass and momentum conservation equations. Energy conservation equation is necessary to solve this property of fluid flow.
What is the equation of Pathline?
These equations define the pathline for any specified time interval. We can eliminate the parameter t from these two equations to obtain an explicit equation for the pathline: (x − X)2 = 2a2 9b y3. (in which, for convenience, we have taken b/a2 = 16/9).
Which principle is used for calculating the Centre of pressure?
We will use the concept of “principle of moments” to determine the centre of pressure. According to the principle of moments, moment of the resultant force about an axis will be equal to the sum of the moments of components about the same axis.
Why the center of pressure is not at the center of the body?
In general term, the center of pressure is located below centroid since pressure increase with depth. The determination of the center of pressure can be performed by equating the moments of the resultant and distributed forces about any arbitrary axis.
What is the difference between center of pressure and center of gravity?
The center of pressure is the average location of where the pressure force is applied. Think of it like the center of gravity, the location where the average weight of an object is, except this time it is the location of average pressure. The center of pressure is where the forces of lift and drag are exerted.
Does hydrostatic force act on a fluid at rest?
For a fluid at rest, the summation of forces acting on the element must be balanced by the gravity force. This is a hydrostatic distribution and is correct for all fluids at rest, regardless of viscosity.
Why is hydrostatic force important?
When a surface is submerged in a fluid, forces develop on the surface due to the fluid. The determination of these forces is important in the design of storage tanks, ships, dams, and other hydraulic structures. The pressure varies linearly with depth if the fluid is incompressible.
How do you calculate hydrostatic force?
To calculate the hydrostatic force, we apply the variable depth formula: F=ρgb∫a[f(x)−g(x)]xdx.
What is the instrument used for the automatic control scheme during the fluid flow?
8. What is the instrument used for the automatic control scheme during the fluid flow? Explanation: Pilot static tube is a system that uses an automatic control scheme to detect pressure. These outside holes are called as a pressure transducer, which controls the automatic scheme during fluid flow.
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 does ideal fluid mean?
An ideal fluid is a fluid that is incompressible and no internal resistance to flow (zero viscosity). In addition ideal fluid particles undergo no rotation about their center of mass (irrotational). An ideal fluid can flow in a circular pattern, but the individual fluid particles are irrotational.
Is milk a Newtonian fluid?
Water, mineral and vegetable oils and pure sucrose solutions are examples of Newtonian fluids. Low-concentration liquids in general, such as whole milk and skim milk, may for practical purposes be characterized as Newtonian fluids.
What is the rule of viscosity?
Newton’s viscosity law’s states that, the shear stress between adjacent fluid layers is proportional to the velocity gradients between the two layers. The ratio of shear stress to shear rate is a constant, for a given temperature and pressure, and is defined as the viscosity or coefficient of viscosity.
Why is it called the continuity equation?
Since there is no flow through the side walls of the duct, what mass comes in over A_1 goes out of A_2, (the flow is steady so that there is no mass accumulation). This equation is called the continuity equation for steady one-dimensional flow.
What is the viscosity for real fluid?
Real fluid: Fluid that have viscosity(μ > 0) and their motion known as viscous flow. All the fluids in actual practice are real fluids.
What are the three principles of fluids?
The basic fluid mechanics principles are the continuity equation (i.e. conservation of mass), the momentum principle (or conservation of momentum) and the energy equation.
What is the Lagrangian description of fluid motion?
There are two ways to describe the fluid motion. One is called Lagrangian, where one follows all fluid particles and describes the variations around each fluid particle along its trajectory. The other is Eulerian, where the variations are described at all fixed stations as a function of time.
What is Centre of pressure in press tool?
This “centre of pressure” is the centroid of the line perimeter of the blank. It should be noted that it is not the centroid of the area of the blank. The centre of pressure can be found out by the following procedure:- 1.An outline of the piece part is drawn.