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I receive the following error when I run the code.ODEintWarning: Excess work done on this call (perhaps wrong Dfuntype). Run with full_output = 1 to get quantitative information. warnings.warn(warning_msg,...
Asked on 12/10/2020 by Eduard Laitin
1 answerI always see Finite Element codes solving PDE with Dirichlet or Neumann boundary conditions. But, I have a problem now consisting of a straight cylinder with a circular base (a...
Asked on 12/10/2020 by yemino
1 answerI'm struggling with the following problem:What is the maximum degree of exactness that we can obtain with the following quadrature >formula$$int_0^1 f(x)frac{1}{sqrt{x}}dx approx w_0 f(x_0) + w_1 f(x_1)$$...
Asked on 12/10/2020 by lukk
1 answerI have written a program to solve for Newton's 2nd Law of motion for a given force law, in 2D polar coordinates.It is known that if the force law...
Asked on 12/09/2020
1 answerI am solving a structural mechanics problem that involves setting constraints, and I use Lagrange multipliers to set it. Consequently, some diagonal entries of the tangent stiffness matrix vanish, and...
Asked on 12/08/2020 by ARUN KUMAR
1 answerI want to simulate the shape of the free surface in a small fuel tank in microgravity, which is very slowly being emptied. The tank is not symmetric, the geometry...
Asked on 12/07/2020 by Christoph
0 answerIt is well known that for certain linear systems Jacobi and Gauss-Seidel iterative methods have the same convergence behavior, e.g. Stein-Rosenberg Theorem. I am wondering if similar...
Asked on 12/07/2020 by hchen
1 answerI am trying to simulate a 2-DOF planar robotic manipulator (have its joints follow a predefined trajectory) that's described by its dynamic model: $$ M(q)ddot{q}+C(q,dot{q})dot{q}+G(q) = tau $$ where...
Asked on 12/07/2020 by Teo Protoulis
1 answerWe are given the 2D coordinates of 2 points: the first point is where the ray starts and it goes through the second point. We are given another ray in...
Asked on 12/05/2020 by Archil Zhvania
3 answerI am currently working on a DNS turbulent solver and I would like to compare my IHT simulations to papers. Those papers show the Probability Density Function of the velocity...
Asked on 12/05/2020 by Ofdow
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