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СРАВНИТЕЛЬНЫЙ АНАЛИЗ ВЛИЯНИЯ СКОРОСТИ ГАЗА НА ТЕМПЕРАТУРНОЕ ПОЛЕ И ГИДРОДИНАМИЧЕСКИЕ ПОТЕРИ В ТЕПЛООБМЕННОЙ СЕКЦИИ КОМПАКТНОГО КОТЛА-УТИЛИЗАТОРА

СРАВНИТЕЛЬНЫЙ АНАЛИЗ ВЛИЯНИЯ СКОРОСТИ ГАЗА НА ТЕМПЕРАТУРНОЕ ПОЛЕ И ГИДРОДИНАМИЧЕСКИЕ ПОТЕРИ В ТЕПЛООБМЕННОЙ СЕКЦИИ КОМПАКТНОГО КОТЛА-УТИЛИЗАТОРА

Abstract

The analysis of the numerical modeling results of gas dynamics in the ducts of the compact exhaust boiler is continued. Currently, there have been done three calculations for the same geometrical model; these calculations have different input speed values, as well as different methods of setting speed. It’s confirmed that in case of continuation of the original calculation with changed boundary condition (speed) in the inlet cross section the results coincide with results of calculation where originally set speed was the same. Thus, it becomes possible to perform several variants of calculations with the same geometry, but with different speed in one session (with minimum correction of initial data). So, the time of setting new temperature mode and the value of gas-dynamic resistance is reduced. Therefore, the time for preparing and carrying out the numerical experiment can be reduced. The influence of input speed on temperature field and hydrodynamic losses in exhaust boiler have been analyzed.

Продолжен анализ результатов численного моделирования движения газа в каналах компактного котла-утилизатора. К настоящему моменту выполнено три расчета для одной и той же геометрической модели, различающихся входной скоростью и способом задания этой скорости. Подтверждено, что в случае продолжения исходного расчета с измененным граничным условием (скоростью) во входном сечении результаты совпадают с результатами расчета, выполненного при изначальном задании такой же скорости. Следовательно, возможно выполнение за один сеанс (при минимальной коррекции исходных данных) нескольких вариантов расчета с одинаковой геометрией, но разной скоростью. При этом сокращается время установления нового температурного режима и величины газодинамического сопротивления. Таким образом, может быть уменьшено время на подготовку и проведение вычислительного эксперимента. Проанализировано влияние входной скорости на температурное поле и газодинамическое сопротивление в котле-утилизаторе.

Keywords

КОТЕЛ-УТИЛИЗАТОР,ВЫЧИСЛИТЕЛЬНАЯ ГИДРОДИНАМИКА,ТЕМПЕРАТУРНОЕ ПОЛЕ,ПОЛЕ СКОРОСТИ,ПОЛЕ ДАВЛЕНИЯ,ГАЗОДИНАМИЧЕСКИЕ ПОТЕРИ,ВРЕМЯ СТАБИЛИЗАЦИИ ПАРАМЕТРОВ ПОТОКА,EXHAUST BOILER,COMPUTATIONAL FLUID HYDRODYNAMICS,TEMPERATURE FIELD,VELOCITY FIELD,PRESSURE FIELD,GASDYNAMIC LOSSES,FLOW CHARACTERISTICS STABILIZATION TIME

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold