Fluid Mechanics Calculator

Lift force is the force perpendicular to the direction of motion, typically acting upward on an object in a fluid flow. The lift force can also be calculated using empirical and theoretical methods, and for aerodynamic lift, one common formula is: L is the lift force, CL​ is the lift coefficient, ρ is the density […]

Hydrostatic force is the force exerted by a fluid on a submerged or partially submerged surface due to the pressure distribution within the fluid. This force arises from the weight of the fluid above the surface and is perpendicular to the surface. Where: F is the hydrostatic force exerted by the fluid on the submerged

Buoyancy is the upward force exerted by a fluid on an object immersed in or floating on its surface. It is a result of the pressure difference between the top and bottom of the object, which creates a net upward force. This phenomenon is governed by Archimedes’ Principle. Where: Fb​ is the buoyant force exerted

Flow rate, also known as volumetric flow rate, is the volume of fluid passing through a given cross-sectional area per unit time. It is a measure of how much fluid flows through a particular point in a system over a specified period. The formula for flow rate (Q) is: where: Q is the flow rate

Fluid statics is the branch of fluid mechanics that deals with fluids at rest or in equilibrium. It focuses on the study of pressure distribution, buoyancy, and hydrostatic forces exerted on submerged or floating bodies. P is the pressure at a certain depth. P0​ is the pressure at the fluid’s surface or a reference point.

Turbulence is chaotic fluid motion characterized by irregular fluctuations in velocity, pressure, and flow properties. It involves the formation of swirling eddies and vortices, leading to enhanced mixing and transport of momentum and energy. ρ is the density of the fluid.  V is the characteristic velocity of the flow.  L is the characteristic length scale. 

Drag force is a resistive force exerted by a fluid (liquid or gas) on an object moving through it. It acts opposite to the direction of the object’s motion. The formula for drag force Fd​ is often expressed as: Fd​ is the drag force. Cd​ is the drag coefficient. ρ is the fluid density.  A

Turbulent flow is a type of fluid motion characterized by chaotic and irregular movement of fluid particles. In turbulent flow, eddies and vortices form, causing mixing and fluctuation in velocity and pressure throughout the fluid. ρ is the density of the fluid. V is the characteristic velocity of the flow.  L is a characteristic length

Viscous flow states that the shear stress (τ) in a fluid is directly proportional to the velocity gradient (du/dy) perpendicular to the direction of flow, and the constant of proportionality is the dynamic viscosity (μ): ​ where: τ is the shear stress. μ is the dynamic viscosity. du/dy​ is the velocity gradient.

Hydrostatic pressure refers to the pressure exerted by a fluid at rest due to the weight of the fluid above a certain point. It is the pressure experienced by a submerged or partially submerged object in a fluid solely due to the depth of the fluid and the gravitational force acting on it. Where: P