The conjugate problem of convective-conductive heat transfer for heat pipelines

Application of a Convective-Conductive Heat Transfer Model in the Heat Loss Analysis of a Heat Pipeline Under Flooding Conditions

“…The mathematical model is completely similar to that described in [10]. The system of equations [10] was solved by the finite element method [12], using the Galerkin approximation [13].…”

“…The system of equations [10] was solved by the finite element method [12], using the Galerkin approximation [13]. The investigations were carried out on a nonuniform finite-element mesh.…”

“…[10,11] of thermophysical characteristics, which were used in the numerical investigations of thermal conditions of the system under consideration (Fig. 1).…”

Impact of the ash deposits from coal combustion on thermal conditions of the furnace pipes

“…For nodes located on the boundary of a solid body we use separate equations for boundary conditions. As a result, algebraic equations are obtained for n nodes to be solved by computer-aided technologies [4,5]. When a single-layer wall is considered, one boundary condition is written for a contaminated wall, depending on the number of layers, two or more.…”

“…The combustion process is adopted to be unsteady. For a steady-state solution we must specify a calculation time that will not affect the result [4,5]. We use the Fourier-Kirchhoff differential equation to describe the unsteady heat transfer by thermal conductivity:…”