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Theory and Modern Applications

Table 3 Numerical results of one-dimensional parabolic problem at \(t=0.1\) for case 2 of Example 1

From: A new high-order compact finite difference scheme based on precise integration method for the numerical simulation of parabolic equations

 

N

11

21

41

81

Taylor

Max(error)

5.485 × 10−4

6.897 × 10−6

9.124 × 10−9

3.565 × 10−11

CPU (s)

0.023

0.022

0.024

0.025

Order

6.313

9.562

8.000

Padé

Max(error)

5.485 × 10−4

6.896 × 10−6

8.956 × 10−9

3.565 × 10−11

CPU (s)

0.023

0.023

0.026

0.027

Order

6.314

9.589

7.973

RK4

Max(error)

5.485 × 10−4

6.897 × 10−6

9.124 × 10−9

3.532 × 10−11

CPU (s)

0.452

0.510

0.859

3.506

Order

6.314

9.562

8.013