RU2002111519A - The method of determining the coefficient of gas flow during flow through slotted channels in the working chamber of the machine - Google Patents

The method of determining the coefficient of gas flow during flow through slotted channels in the working chamber of the machine

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Publication number
RU2002111519A
RU2002111519A RU2002111519/28A RU2002111519A RU2002111519A RU 2002111519 A RU2002111519 A RU 2002111519A RU 2002111519/28 A RU2002111519/28 A RU 2002111519/28A RU 2002111519 A RU2002111519 A RU 2002111519A RU 2002111519 A RU2002111519 A RU 2002111519A
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Russia
Prior art keywords
gas
coefficient
working chamber
measured
determining
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RU2002111519/28A
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Russian (ru)
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RU2244267C2 (en
Inventor
Владимир Леонидович Юша
Александр Александрович Гуров
Денис Юрьевич Меренков
Андрей Владимирович Юша
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Омский государственный технический университет
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Priority to RU2002111519/28A priority Critical patent/RU2244267C2/en
Publication of RU2002111519A publication Critical patent/RU2002111519A/en
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  • Measuring Fluid Pressure (AREA)

Claims (1)

Способ определения коэффициента расхода газа при его течении через щелевые каналы в рабочей полости машины объемного действия, включающий измерение давления в полостях цилиндра над и под возвратно-поступательно движущимся поршнем и вычисление коэффициента расхода газа по формулеA method for determining the gas flow coefficient during its flow through slotted channels in the working cavity of a volumetric machine, including measuring the pressure in the cylinder cavities above and below the reciprocating piston and calculating the gas flow coefficient by the formula
Figure 00000001
Figure 00000001
где М - измеренный массовый расход, кг/с;where M is the measured mass flow rate, kg / s; P1, Р2 - давление газа перед и после щели, Па;P 1 , P 2 - gas pressure before and after the gap, Pa; p1 - плотность газа перед щелевым каналом, кг/м3;p 1 - gas density in front of the slotted channel, kg / m 3 ; f - площадь проходного сечения щелевого канала, м2;f is the area of the passage section of the slotted channel, m 2 ; εp - коэффициент сжимаемости,ε p is the compressibility coefficient, отличающийся тем, что в рабочей полости, изолированной с обеих сторон от окружающей среды, производят измерения мгновенных значений текущих величин давления газа Р, температуры Т, геометрического объема полости V и площади проходного сечения щелевого канала f через малые равные промежутки времени Δτ, а массовый расход газа М определяют по формулеcharacterized in that in the working cavity, isolated on both sides of the environment, measure the instantaneous values of the current values of the gas pressure P, temperature T, the geometric volume of the cavity V and the area of the passage section of the slotted channel f at small equal time intervals Δτ, and the mass flow rate gas M is determined by the formula
Figure 00000002
Figure 00000002
где R - газовая постоянная, Дж/кг·К;where R is the gas constant, J / kg · K; Pi - давление газа, измеренное на i-м шаге Па;P i is the gas pressure measured at the ith step Pa; Рi-1 - давление газа, измеренное на i-1-м шаге Па;P i-1 is the gas pressure measured at the i-1st step Pa; Тi - температура газа, измеренная на i-м шаге К;T i - gas temperature measured at the i-th step K; Ti-1 - температура газа, измеренная на i-1-м шаге К;T i-1 is the gas temperature measured at the i-1st step K; Vi - геометрический объем рабочей камеры на i-м шаге, м3;V i - the geometric volume of the working chamber at the i-th step, m 3 ; Vi-1 - геометрический объем рабочей камеры на i-1-м шаге, м3;V i-1 is the geometric volume of the working chamber at the i-1st step, m 3 ;
Figure 00000003
Figure 00000003
где N ≥ 360 - число измерений за цикл;where N ≥ 360 is the number of measurements per cycle; ν - частота рабочего цикла машины объемного действия.ν is the frequency of the duty cycle of a volumetric machine.
RU2002111519/28A 2002-04-29 2002-04-29 Method of measuring gas consumption factor at flowing gas through slit channel in working chamber of volumetric action machine RU2244267C2 (en)

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RU2586792C1 (en) * 2015-03-03 2016-06-10 Акционерное общество "Научно-производственный центр газотурбостроения "Салют" (АО "НПЦ газотурбостроения "Салют") Method of determining coefficient of gas flow through nozzle assembly of turbine bypass gas turbine engine

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