Question

The zero sum rule and the opposite signs rule are applicable to _______________

(a) each discretized equation

(b) the global matrix

(c) the coefficients of each discretized equation

(d) the coefficient matrix

Answer 1

The correct option is (c) the coefficients of each discretized equation

The explanation: A proper discretization should result in a discretized algebraic equation that reflects the characteristics of the original conservation equation. The coefficients of each discretized equation should satisfy the zero sum and the opposite signs rules.