Question

The non-linear terms like convection and source terms in a system are linearized using __________

(a) Iterative gradient method

(b) Jacobi method

(c) Picard iteration

(d) Incomplete LU decomposition

The question was asked at a job interview.

Asked question is from Numerical Methods in portion Numerical Methods of Computational Fluid Dynamics

Answer 1

Right answer is (c) Picard iteration

To explain I would say: The usual solution of non-linear coupled system is the sequential decoupled method. For this, the non-linear terms are linearized using the Picard iteration method. This is applied for convection and source terms of the equation.