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Tang, J.M. (author), Vuik, C. (author), Witteveen, C. (author)In this report, the recent and future contributions of experts and groups of Delft University of Technology (DUT) on the topic of smart grids (SG) are presented. This may provide guidelines on how DUT can contribute in current and future SG projects, such as the current TKI project on “Smart Grid Evolution (SGE): Developing a service platform...report 2014
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Yeung, M.C. (author), Tang, J.M. (author), Vuik, C. (author)We consider the solution of large and sparse linear systems of equations by GMRES. Due to the appearance of unfavorable eigenvalues in the spectrum of the coefficient matrix, the convergence of GMRES may hamper. To overcome this, a deflated variant of GMRES can be used, which treats those unfavorable eigenvalues effectively. In the literature,...report 2010
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- MacLachlan, S.P. (author), Tang, J.M. (author), Vuik, C. (author) report 2008
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- Tang, J.M. (author), MacLachlan, S.P. (author), Nabben, R. (author), Vuik, C. (author) report 2008
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- Tang, J.M. (author), Vuik, C. (author) report 2007
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- Tang, J.M. (author), Nabben, R. (author), Vuik, C. (author), Erlangga, Y.A. (author) report 2007
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Tang, J.M. (author), Vuik, C. (author)Simulating bubbly flows is a very popular topic in CFD. These bubbly flows are governed by the Navier-Stokes equations. In many popular operator splitting formulations for these equations, solving the linear system coming from the discontinuous Poisson equation takes the most computational time, despite of its elliptic nature. ICCG is widely...report 2006
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Tang, J.M. (author), Vuik, C. (author)For various applications, it is well-known that deflated ICCG is an efficient method for solving linear systems with invertible and singular co-efficient matrix. This deflated ICCG with subdomain deflation vectors is used by us to solve linear systems with singular coefficient matrix, arising from a discretization of the Poisson equation with...report 2006
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- Tang, J.M., (author), Vuik, C. (author) report 2005
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Tang, J.M., (author), Vuik, C. (author)In this report we give new insights into the properties of invertible and singular deflated and preconditioned linear systems where the coefficient matrices are also symmetric and positive (semi-) definite. First we prove that the invertible de ated matrix has always a more favorable effeective condition number compared to the original matrix....report 2005