The Reynolds number (Re) based on a characteristic length x1 is a dimensionless quantity used to describe the nature of fluid flow past an object, such as a pipe, a cylinder, or an airfoil. It’s a fundamental parameter in fluid dynamics that helps predict whether the flow is laminar or turbulent.
- Rex1 is the Reynolds number based on the characteristic length x1.
- x1/c is the ratio of distance to the chord length
- 𝜌∞ is the density of the fluid far away from the object (free stream density).
- V∞ is the velocity of the fluid far away from the object (free stream velocity).
- 𝜇∞ is the dynamic viscosity of the fluid far away from the object.