Detecting Inverse Boundaries by Weighted High-Order Gradient Collocation Method
Abstract
:1. Introduction
2. Strong Form of Inverse Cauchy Problems
3. Weighted High-Order Gradient Reproducing Kernel Collocation Method
3.1. Reproducing Kernel Approximation
3.2. High-Order Gradient Reproducing Kernel Approximation
3.3. Weighted Discrete Collocation Equations by HG-RK Approximation
4. Numerical Implementation
4.1. Convergence Study
4.2. Annular Domains
4.3. Multiply Connected Domains: Type One
4.4. Multiply Connected Domains: Type Two
5. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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s | 0 | 1 | 2 | 3 | |
---|---|---|---|---|---|
(a) | u | 6.2683 × 10−10 | 1.0422 | 2.3082 | 3.7493 |
u,x | 6.2619 × 10−10 | 2.9022 | 4.7829 | 5.5098 | |
u,y | 1.2626 × 10−9 | 2.7713 | 4.9511 | 6.7354 | |
(b) | u | 3.4001 × 10−12 | 0.1038 | 0.2400 | 0.4209 |
u,x | 2.8721 × 10−11 | 0.9011 | 1.8392 | 2.6904 | |
u,y | 2.2637 × 10−11 | 0.8725 | 1.7428 | 1.7441 | |
(c) | u | 3.6526 × 10−12 | 0.2722 | 0.3525 | 0.5416 |
u,x | 1.8374 × 10−11 | 1.2760 | 1.7217 | 1.9987 | |
u,y | 1.6998 × 10−11 | 1.1475 | 1.5912 | 2.0693 |
s | 0 | 1 | 2 | 3 | |
---|---|---|---|---|---|
(a) | u | 0.3942 | 0.5251 | 0.5947 | 0.8998 |
u,x | 4.1349 | 4.5853 | 4.9640 | 5.2201 | |
u,y | 3.0719 | 3.3959 | 3.9454 | 4.1871 | |
(b) | u | 0.3899 | 0.7809 | 0.9303 | 1.1415 |
u,x | 3.4197 | 5.2031 | 5.5692 | 8.8528 | |
u,y | 3.1640 | 3.7078 | 4.0539 | 8.7244 | |
(c) | u | 0.3932 | 0.6791 | 1.0372 | 1.6399 |
u,x | 4.0919 | 4.6996 | 5.0791 | 6.5832 | |
u,y | 3.0315 | 3.3222 | 3.9394 | 4.4157 | |
(d) | u | 4.6230 | 9.7452 | 11.6293 | - |
u,x | 29.5079 | 32.3523 | 39.8299 | - | |
u,y | 27.6338 | 35.6646 | 41.2359 | - |
s | 0 | 1 | 2 | 3 | |
---|---|---|---|---|---|
(a) | u | 0.9392 | 0.9703 | 1.1766 | 1.2071 |
u,x | 4.3020 | 3.8733 | 3.8337 | 4.9856 | |
u,y | 6.5409 | 6.4914 | 7.1475 | 7.2616 | |
(b) | u | 1.2561 | 1.3938 | 1.4540 | 1.6904 |
u,x | 5.5221 | 6.3356 | 7.0172 | 8.0663 | |
u,y | 8.7736 | 7.5323 | 7.7360 | 7.5732 | |
(c) | u | 0.9973 | 1.0513 | 1.2115 | 1.4096 |
u,x | 4.8008 | 5.1810 | 5.6641 | 7.2072 | |
u,y | 7.4692 | 8.0126 | 5.3486 | 8.0440 | |
(d) | u | 5.6311 | 6.5935 | 10.9980 | - |
u,x | 25.7791 | 34.7108 | 37.6828 | - | |
u,y | 30.7985 | 34.9769 | 44.3546 | - |
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Yang, J.P.; Lam, H.F.S. Detecting Inverse Boundaries by Weighted High-Order Gradient Collocation Method. Mathematics 2020, 8, 1297. https://0-doi-org.brum.beds.ac.uk/10.3390/math8081297
Yang JP, Lam HFS. Detecting Inverse Boundaries by Weighted High-Order Gradient Collocation Method. Mathematics. 2020; 8(8):1297. https://0-doi-org.brum.beds.ac.uk/10.3390/math8081297
Chicago/Turabian StyleYang, Judy P., and Hon Fung Samuel Lam. 2020. "Detecting Inverse Boundaries by Weighted High-Order Gradient Collocation Method" Mathematics 8, no. 8: 1297. https://0-doi-org.brum.beds.ac.uk/10.3390/math8081297