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Thermal radiation and natural convection in a large-scale enclosure heated from below:Building application

Building Simulation 2021年第3期14卷 681-691页

作者： stepa. a.mikhailenko Igor V.Miroshnichenko Mikhail A.Sheremet Laboratory on Convective Heat and Mass Transfer Tomsk State University634050 TomskRussia Regional Scientific and Educational Mathematical Centre Tomsk State University634050 TomskRussia

A computational research of radiative-convective energy transport in large-scale enclosure with a heat-generating heater under normal room conditions has been *** heater(underfloor heating system)is located at the bottom of the *** the Boussinesq assumption,the control equations have been solved contemporaneously to receive both the velocity fields and temperature *** generate the systems of linear equations using vorticity and stream function,the finite difference technique has been *** developed convective-radiative model has been validated through a comparison with several *** influence of heater size and location,internal surfaces emissivity from 0 to 1,Ostrogradsky number for a wide range from 0 to 5 on Nusselt numbers and both stream function and temperature distributions has been *** results demonstrate that the influence of the thermal radiation on total heat transfer increases with surface emissivity of walls and heater surfaces.

关键词： indoor environment natural convection thermal radiation large-scale cabinet local heater finite difference method

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Numerical Simulation of Acoustic-Gravity Waves Propagation in a Heterogeneous Earth-Atmosphere Model with Wind in the Atmosphere

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Journal of Applied Mathematics and Physics 2013年第4期1卷 12-17页

作者： B. G. mikhailenko A. A. Mikhailov G. V. Reshetova The Institute of Computational Mathematics and Mathematical Geophysics Siberian Branch of the RAS pr. Akad. Lavrentieva 6 Novosibirsk 630090 Russia

A numerical-analytical solution for seismic and acoustic-gravity waves propagation is applied to a heterogeneous “Earth-Atmosphere” model. Seismic wave propagation in an elastic half-space is described by a system of first order dynamic equations of elasticity theory. Propagation of acoustic-gravity waves in the atmosphere is described by the linearized Navier-Stokes equations with the wind. The algorithm proposed is based on the integral Laguerre transform with respect to time, the finite integral Fourier transform along the spatial coordinate with the finite difference solution of the reduced problem.

关键词： Seismic Waves Acoustic-Gravity Waves Navier-Stokes Equations Laguerre Transform Finite Difference Method

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Tumor-Infiltrating Lymphocytes in Primary Tumor and Bone Marrow in Patients with Gastric Cancer and Overweight

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Journal of Pharmacy and Pharmacology 2019年第12期7卷 611-620页

作者： Larissa Nikitichna Bubnovskaya Viktor Michailovich mikhailenko Sergey Pavlovich Merentsev Dmitriy Sergeevich Osinsky R.E.Kavetsky Institute of Experimental Pathology Oncology and RadiobiologyNational Academy of Sciences of UkraineVasilkovskaya Str.45Kiev-03022Ukraine City Clinical Oncological Center Verchovynna Str.69Kiev-03115Ukraine

Immune infiltration in human tumors is a key prognostic *** this aspect it has to be noted that the publications concerning the tumor-infiltrating lymphocytes(TILs)under overweight and obesity are limited,especially in the clinical setting in particular concerning gastric *** study has shown that density of TILs consistently associated with body mass index(BMI)and density of cancer-associated adipocytes(CAA)in tumors,decreased significantly in patients with BMI>30 having high density of *** in tumor does not affect this *** with BMI>30 having high density of CAA with slight infiltrating of TILs in tumors demonstrated better overall survival than the same patients with BMI<25 whereas the same patients with BMI<25 but with low density of CAA have shown much longer overall *** of TILs in BM was not affected by both the high density of CAA and level of hypoxia in primary tumor;moreover it has not been associated with BMI as well as patients survival *** the metabolic changes that occur in obese individuals may help to pave the way for more effective treatments for patients with gastric cancer having overweight.

关键词： CD8^+ CD45RO^+-T lymphocytes CAA bone marrow hypoxia BMI

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用谱有限差分法进行地震模拟

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世界地震译丛 2002年第1期33卷 63-75页

作者： B.G.mikhailenko 杨国栋张元生中国地震局兰州地震研究所

提出了以计算一个或两个空间坐标导数的谱方法与对剩余空间坐标和时间作一维有限差分近似相结合为基础的若干有效算法。讨论了几种依赖于弹性参数特性的算法。也提出了一种仅对空间坐标作有限差分近似而使问题简化的算法。对于这种情况... 详细信息

提出了以计算一个或两个空间坐标导数的谱方法与对剩余空间坐标和时间作一维有限差分近似相结合为基础的若干有效算法。讨论了几种依赖于弹性参数特性的算法。也提出了一种仅对空间坐标作有限差分近似而使问题简化的算法。对于这种情况,利用矩阵分解法,把获得的对时间的普通差分方程组简化成N个独立的柯西问题。对这些柯西问题可以使用解析方法求解。我们对不同模型给出了计算合成地震图的一些例子。

关键词：伪谱法有限差分法地震模拟矩阵分解法地震波

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