CIVIL 202

Specific Weight = ?

Specific Weight = density * Gravity

Specific Volume = ?

Specific Volume = 1 / density

Mass density = ?

Mass density = mass / Volume

Specific Gravity = ?

Specific Gravity = Density of fluid / Density of water at 4 C (1000 kg/m³)

Weight = ?

Weight = mass * gravity

Volumetric flow (Q) = ?

Volumetric flow (Q) = Volume / time

Ideal Gas Law = ?

density = pressure / (Renolds No / Temp)

change in pressure = ?

change in pressure = Bulk modulus of elasticity * (change in specific volume / volume)

If dealing with the same mass what is the equation (change in Specific Volume / Volume) turn into?

(change in Specific Volume/Volume) turns into (change in specific volume/specific volume)

When dealing with capillary rise what is the equation?

(Diameter * Tension force of surface * cos theta) - Weight force

When dealing with capillary rise what is the equation for Fw?

Volume * gravity * Pressure. Volume = Area * Height. Area = (pi * d²)/4

1 bar = ? Pa

1 bar = 101325 Pa

Absolute Pressure head of Water at a certain Pressure. What is the equation?

Absolute Pressure head = specific Pressure / (density * gravity)

Barometer. 1mm(Hg) = ?

1.333(kPa) / (mm Hg)

Manometers. P(fluid) = P(water). What assumption makes this true?

The assumption that the liquid in the tube is a continuous fluid meaning that the liquid doesn’t move.

Tensile Force = ?

Force around circumference / Circumference Length = Tensile Force

Buoyancy. What is the equation for Weight (W)?

Weight (W) = density * gravity * Volume. Note: Force is always in equilibrium

What are the terms for local flow?

du/dt, du/dx, du/dy, du/dz, dv/dt, dv/dx, dv/dy, dv/dz, dw/dt, dw/dx, dw/dy/ dw/dz.

What are the terms for convective flow?

ax, ay, az.

What conditions do there have to be for the equation to be deemed steady?

du/dt, dv/dt, dw/dt. If any of these values are larger than 0 than the equation is deemed unsteady

What conditions must be in place in order for an equation to be deemed Uniform?

du/dx, dv/dy, dw/dz. If any of these values are larger than 0 then the equation is deemed non uniform.

When dealing with streamline questions which equation do you use?

dy/dx = v/u. Then you rearrange and put y values one side and x values on the other side. Integrate it and then solve for C using conditions and then solve the question.