Contents
- Index

**Sphere_Q_ND**

The function **sphere_Q_ND(Fo, Bi)** returns the non-dimensional heat transfer into a sphere whose outer surface (r=r_o) is exposed to convection. The supplied values, Fo, Bi represent Fourier number and Biot number respectively. See Section 3.5.2 of Nellis and Klein for more information.

**Inputs:**

**Output:**

**Example:**

r_bar=0.3

Fo=0.23

Bi=1.02

Q_hat=sphere_Q_ND(Fo, Bi)

{Solution: Q_hat=0.4466}

**Transient Conduction Index**