Lift Force For Body Moving In Fluid Calculator

Lift Force Formula:

\[ F_L' = \frac{C_L \times A_p \times M_w \times v^2}{V_w \times 2} \]

Lift Coefficient (C_L):

(dimensionless)

Projected Area (A_p):

m²

Mass of Flowing Fluid (M_w):

Velocity (v):

m/s

Volume of Flowing Fluid (V_w):

m³

Lift Force (F_L'):

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1. What is Lift Force on Body in Fluid?

Lift Force on Body in Fluid is the sum of all the forces on a body that force it to move perpendicular to the direction of flow of the fluid. It's a fundamental concept in fluid dynamics and aerodynamics.

2. How Does the Calculator Work?

The calculator uses the Lift Force formula:

\[ F_L' = \frac{C_L \times A_p \times M_w \times v^2}{V_w \times 2} \]

Where:

\( F_L' \) — Lift Force on Body in Fluid (N)
\( C_L \) — Lift Coefficient for Body in Fluid (dimensionless)
\( A_p \) — Projected Area of Body (m²)
\( M_w \) — Mass of Flowing Fluid (kg)
\( v \) — Velocity of Body or Fluid (m/s)
\( V_w \) — Volume of Flowing Fluid (m³)

Explanation: The equation calculates the lift force generated when a body moves through a fluid, considering the body's characteristics and fluid properties.

3. Importance of Lift Force Calculation

Details: Accurate lift force calculation is crucial for designing aircraft wings, hydrofoils, sails, and other aerodynamic/hydrodynamic surfaces. It helps predict how objects will behave in fluid flows.

4. Using the Calculator

Tips: Enter all values in appropriate units. Lift coefficient is dimensionless, projected area in m², mass in kg, velocity in m/s, and volume in m³. All values must be positive.

5. Frequently Asked Questions (FAQ)

Q1: What is the lift coefficient?
A: The lift coefficient is a dimensionless number that quantifies the relationship between lift force, fluid density, velocity, and reference area.

Q2: How does velocity affect lift force?
A: Lift force increases with the square of velocity, meaning doubling the velocity quadruples the lift force.

Q3: What is projected area?
A: Projected area is the two-dimensional area of a three-dimensional object by projecting its shape onto a plane parallel to fluid flow.

Q4: When is this formula applicable?
A: This formula is applicable for bodies moving through incompressible fluids at moderate speeds where fluid density remains constant.

Q5: How does fluid density relate to this calculation?
A: Fluid density is represented indirectly through mass and volume (density = mass/volume), which are both included in the formula.