Analysis of installation effects by means of computational fluid dynamics—CFD vs experiments?

Hilgenstock, A.; Ernst, Reinhard

doi:10.1016/s0955-5986(97)88066-1

Cited by 69 publications

(37 citation statements)

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“…Most of the numerical simulations used the k-ε turbulence model. Hilgenstock and Ernst [5] explored installation effects, and found good agreement with the experimentally obtained data. Holm et al [6] found that the simulated discharge coefficient was in agreement with experimental results.…”

Section: Literaturesupporting

confidence: 71%

“…Fortunately, the database also contains P and all other information, which permits the regeneration of the flow rate by Eq. (5). The volumetric flow rate thus obtained is then fitted against the pressure drop across the orifice to obtain the best possible values for the power law coefficient, b.…”

Section: Gri/nist Databasementioning

confidence: 99%

“…(d) Convergence and divergence within the region of the orifice provide momentum terms that change the static pressure. (e) Energy losses due to turbulence within the assembly, which depend on flow rate, affect P. Many other nonideal aspects have been acknowledged [5][6][7][8][9][10][11][12][13]. The international standard for orifice flow rate measurement [14] uses the square root functionality represented in Eq.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A power law approach to orifice flow rate calibration

Rhinehart¹,

Gebreyohannes²,

Sridhar³

et al. 2011

ISA Transactions

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Section: Literaturesupporting

confidence: 71%

Section: Gri/nist Databasementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A power law approach to orifice flow rate calibration

Rhinehart¹,

Gebreyohannes²,

Sridhar³

et al. 2011

ISA Transactions

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“…On the other hand, numerical simulation has been proved to have good agreement with experiments for UFMs [37,38] and widely adopted in many similar researches [12,13,23,24]. This paper will adopt numerical simulation to verify the proposed method aimed at focusing on minimizing the errors caused by integration methods.…”

Section: Introductionmentioning

confidence: 97%

Application of extreme learning machine to gas flow measurement with multipath acoustic transducers

Qin

Mao

et al. 2016

Flow Measurement and Instrumentation

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“…In natural gas industry, ultrasonic flowmeter is considered to be an important metering method for its accuracy, high repeatability, wide measurement range, simple operation, easy installation and other advantages [2][3][4][5]. However, the accuracy of the ultrasonic flowmeter is affected by different inlet velocity distributions caused by pipe configurations upstream such as bends, headers, pressure regulators or diameter changes, resulting in erroneous measurements by up to several percent [6].…”

Section: Introductionmentioning

confidence: 99%

A CFD simulation for the ultrasonic flow meter with a header

Liu

Tan²,

Peng

2017

Teh. vjesn.

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Original scientific paper Ultrasonic flow meter has been used in natural gas metering for many years, however, the measurement accuracy of the ultrasonic flow meter is affected by the header, which leads to non-perfect fluid state in the flow meter. The objective of this research is to discuss the issues of dual-path ultrasonic flowmeter with a header. Computer fluid dynamic (CFD) method is used to simulate standard turbulent model. It is found that the flow state in the downstream is distorted by the header with secondary turbulence, swirl etc., and the velocity distribution of the gas is asymmetric; the farther the distance between the ultrasonic flow meter and the header, the smaller the distortion and the simulation error. When the downstream straight pipe length is greater than 27 − D (Diameter), the flow state will be steady. With the same diameter of the header, the shorter the meter header the greater the distortion of the gas in the downstream pipe. With the same length of the header, the smaller the diameter, the greater the distortion of the gas in the downstream. These results have a great guiding significance in the optimal design of the flow meter installation structure. Keywords: Pipe manifold; Ultrasonic flow meter; Measurement performance; Indication error CFD simulacija za ultrazvučni mjerač protoka sa zaglavljemIzvorni znanstveni članak Ultrazvučni mjerač protoka koristi se u mjerenju prirodnog plina dugi niz godina, međutim, na mjernu točnost ultrazvučnog mjerača protoka utječe zaglavlje, što dovodi do nespretnog fluidnog stanja u mjeraču protoka. Cilj ovog istraživanja je raspraviti pitanja dvostruke staze ultrazvučnih mjerača protoka sa zaglavljem. Dinamička metoda računalne tekućine (CFD) je korištena za simulaciju standardnog turbulentnog modela. Nađeno je da je stanje protoka u nizvodnom smjeru izobličeno zaglavljem sa sekundarnom turbulencijom, vrtloženjem itd., a brzina distribucije plina je asimetrična; što je dalje udaljenost između ultrazvučnog mjerača protoka i zaglavlja, to je manja iskrivljenost i simulacijska pogreška. Kada je nizvodno ravna duljina cijevi veća od 27 − D (promjer), stanje protoka će biti stabilno. S istim promjerom zaglavlja, što je kraći mjerač glave, to je veća deformacija plina u nizvodnoj cijevi. S istom duljinom zaglavlja, manji je promjer, ali je veća deformacija plina u nizvodnom smjeru. Ti rezultati imaju veliko značenje u optimalnom dizajnu instalacije mjerača protoka.

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Analysis of installation effects by means of computational fluid dynamics—CFD vs experiments?

Cited by 69 publications

References 0 publications

A power law approach to orifice flow rate calibration

A power law approach to orifice flow rate calibration

Application of extreme learning machine to gas flow measurement with multipath acoustic transducers

A CFD simulation for the ultrasonic flow meter with a header

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