动力工程
動力工程
동력공정
POWER ENGINEERING
2001年
1期
1082-1085
,共4页
辐射%热负荷反问题%蒙特卡洛法%共轭梯度法
輻射%熱負荷反問題%矇特卡洛法%共軛梯度法
복사%열부하반문제%몽특잡락법%공액제도법
采用蒙特卡洛法与共轭梯度法确定三维矩形炉膛中燃烧器或加热表面的温度分布与热负荷分布。
讨论了测量误差对计算结果的影响,结果表明:当测量值不含误差时,用共轭梯度法计算得到的加热表面的温
度值和热流量值与其真实值吻合很好。实验测量误差对计算精度的影响与加热表面及受热表面之间的辐射
热交换系数有关,辐射热交换系数越大,测量误差对计算结果的影响越大。图4参6
採用矇特卡洛法與共軛梯度法確定三維矩形爐膛中燃燒器或加熱錶麵的溫度分佈與熱負荷分佈。
討論瞭測量誤差對計算結果的影響,結果錶明:噹測量值不含誤差時,用共軛梯度法計算得到的加熱錶麵的溫
度值和熱流量值與其真實值吻閤很好。實驗測量誤差對計算精度的影響與加熱錶麵及受熱錶麵之間的輻射
熱交換繫數有關,輻射熱交換繫數越大,測量誤差對計算結果的影響越大。圖4參6
채용몽특잡락법여공액제도법학정삼유구형로당중연소기혹가열표면적온도분포여열부하분포。
토론료측량오차대계산결과적영향,결과표명:당측량치불함오차시,용공액제도법계산득도적가열표면적온
도치화열류량치여기진실치문합흔호。실험측량오차대계산정도적영향여가열표면급수열표면지간적복사
열교환계수유관,복사열교환계수월대,측량오차대계산결과적영향월대。도4삼6
The objective of this paper is to solve the inverse radiative load problem within three-dimen-
sional system using the Monte-Carlo Method and the Conjugate Gradient Method (CGM ). The effects
of the measurement error on the estimated results are also discussed. From above mentioned analysis,
following results are obtained, the agreement between the estimated and the exact values of the heater
surfaces are excellent, when the temperature and heat flux distributions of the heated object arer ex
act. The effects of the measurement error on the estimated results are related to the Radiative Energy
Absorption Distribution(READ) of the heater surfaces Vs heated surfaces. The influences of the mea
surement error on the estimated results will be large, when the READ is large. Figs 4 and refs 6.