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An element-free Galerkin meshless method for simulating the behavior of cancer cell invasion of surrounding tissue

机译:用于模拟癌细胞入侵周围组织行为的无元素Galerkin无网格方法

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In the present work, we apply a meshless approach based on weak form namely element-free Galerkin for finding the numerical solution of the mathematical modelling of cancer cell invasion of tissue. A semi-implicit finite difference scheme based on backward Euler is also used for estimating the temporal variable. In order to verify this method, we have compared it numerically with another meshless technique i.e. generalized moving least squares approximation. The proposed method depends on a set of scattered points on the domain of the problem. Also, this approach is based on global weak form and requires a background cell for computing the numerical integrations. The studied model consists of a system of time-dependent reaction-diffusion-taxis partial differential equations describing the interactions between cancer cells, extracellular matrix and matrix degradation enzymes. At the end of this paper, we present some numerical simulations showing the behavior of cancer cell invasion of tissue at different times using regular and Halton points as well.
机译:在目前的工作中,我们应用基于弱形式即无元素Galerkin的无网格方法来寻找组织癌细胞侵袭数学模型的数值解。基于后向欧拉的半隐式有限差分方案也被用于估计时间变量。为了验证该方法,我们将其与另一种无网格技术(即广义移动最小二乘近似)进行了数值比较。所提出的方法取决于问题域上的一组分散点。同样,该方法基于整体弱形式,并且需要背景单元来计算数值积分。所研究的模型由一个随时间变化的反应-扩散-出租车偏微分方程组组成,描述了癌细胞,细胞外基质和基质降解酶之间的相互作用。在本文的最后,我们还提供了一些数值模拟,这些数值模拟也显示了使用常规点和Halton点在不同时间侵入癌细胞的行为。

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