Prandtl-number
Prandtl number (Pr) Prandtl number signifies that, how much heat is carried away by how much fluid, transferring from one point to another. Mathematically it is defined as the ratio of momentum diffusivity to the thermal diffusivity. It is dimensionless quantity. Let's understand little bit about diffusivity. Conduction is basically the ability to transfer the things from one place to other place. It signifies how much material or medium is supporting in transferring things. Just opposite to this property conduction we have one more property called diffusion. It's basically a storage capacity or we can say absorbing ability of material. For particular material diffusivity is defined as, how much conducting property is dominating over storage property. So from here we can conclude that net transfer is not represented by conduction it represented by diffusion. Kinematic viscosity shows net transfer of molecular movement that's why it's called momentum dif...