Two-step design process for optimal suction muffler in reciprocating compressor

Oh, Kee Seung; Lee, Jin Woo

doi:10.1007/s12206-014-1233-9

Cited by 14 publications

(7 citation statements)

References 12 publications

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“…In their approach, they considered topologies through creative optimization and ratios of partition volu me such the uniform part itions are obtained before subjecting them for problems concerning optimization of shape. In conclusion, through calculated and experimental verificat ion, they validated their method of designing a suction muffler [15].…”

Section: ''""mentioning

confidence: 79%

Energy Efficient Design and Modification of an Automotive Exhaust Muffler for Optimum Noise, Transmission loss, Insertion loss and Back pressure: A Review

George

Raj

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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This review paper showcases the various kinds of practical muffler designs available and attempted by several researchers and pioneers in muffler designing. The various design methodologies, design principles and lead factors that they have considered while designing is explained in this paper. The objective behind this study is to have a satisfactory knowledge about the various elements that comes into being when muffler designing is put forth to practice. The transmission loss and backpressure of the exhaust muffler, has been the key factor of consideration in most of the works done by the researchers as these have a direct impact on the engine performance, exhaust noise attenuation and finally fuel efficiency of the engine.

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Section: ''""mentioning

confidence: 79%

Energy Efficient Design and Modification of an Automotive Exhaust Muffler for Optimum Noise, Transmission loss, Insertion loss and Back pressure: A Review

George

Raj

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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“…The functions are called interpolation functions, and their effectiveness in acoustical, thermal, and flow TO problems have been sufficiently validated in previous studies. [12][13][14][15][16]29,30,[32][33][34] The density ð ρ r Þ and bulk modulus ðB r Þ of the r-th finite element in the design domain for the Helmholtz equation are determined by the interpolation functions given as equation ( 20)…”

Section: Density-based Tomentioning

confidence: 99%

Partition layout inside a muffler integrated with a thermoelectric generator: Multi-physics analysis and optimal design

Lee

2022

Journal of Low Frequency Noise, Vibration and Active Control

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A multi-physics-analysis-based topology optimization (TO) method is proposed to optimally design the internal partition layout of a muffler integrated with a thermoelectric generator (TEG). The basic equations governing the acoustical behavior, heat transfer, and fluid flow in the muffler are introduced, and their interaction is designated for exact numerical analysis in terms of acoustics, heat transfer, and fluid mechanics. To implement density-based TO, one design variable is assigned to each finite element in the design domain, and interpolation functions suitable for each physics phenomenon are employed. In the TO problem formulation, the sum of the squared acoustic pressures at the outlet of the muffler for multi-target frequencies is selected as an objective function to achieve broadband noise attenuation. The temperature of the TEG and the pressure drop are constrained for high energy recovery efficiency and fluid passage, respectively. The optimization problem formulated for the muffler design is solved for various design conditions. Optimal partition layouts are obtained depending on the location and length of the TEG, the upper limit value of the pressure drop, and the number of target frequencies in the same frequency band. The noise attenuation performances of each partition layout are compared, and their expected recovery energies are calculated. One optimal partition layout is discussed in terms of acoustics, heat transfer, and fluid mechanics. The numerical results strongly support the validity of our proposed method for the optimal design of a muffler integrated with a TEG.

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“…In the size-optimization Optimal results obtained by solving topology-optimization problem III at f t = 100 Hz, TL low = 10 dB, V f = 0.20, and α = 1.3: a optimal topology and b history of the objective function, TL, and compliance problem, the following finite difference equations were used in the sensitivity analysis (Oh and Lee 2015):…”

Section: Design Variables In Eachmentioning

confidence: 99%

Optimum core design to improve noise attenuation performance and stiffness of sandwich panels used for high-speed railway vehicles

Yoon

Lee

2016

Struct Multidisc Optim

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In this study, we optimally design the core of a metal sandwich panel used in high-speed railway vehicles to minimize the amount of metal solid in the core and subsequently reduce its weight. The optimum core must satisfy constraints regarding sound transmission class (STC) and compliance. Because the solid-void layout in the core strongly affects the acoustic and static characteristics of sandwich panels, the core layout should be carefully designed when reducing the amount of metal solid. To this end, three topology-optimization problems and one size-optimization problem are formulated and sequentially solved. A single unit cell is periodically repeated in the core. Thus, structural and acoustic topology-optimization problems are first formulated and solved for the unit cell. Based on the optimal topologies obtained for the unit cell, a moderate initial solid-void layout in the unit cell is determined for the size-optimization problem to optimally design core. The effectiveness of the current design approach for the core of the sandwich panel is validated by comparing the STC and compliance values of the optimal core design and a reference design. Nomenclature A N n¼1 finite element assembly operator Bmatrix relating the element strain vector to its nodal displacement vector C m e a nc o m p l i a n c e C ini initial mean compliance c speed of sound in air D constitutive matrix d 1 thickness of thin flat plates at both ends in a sandwich panel d 2 thickness of the bar inside a sandwich panel dis (r,m) distance between the centers of the r th and m th elements E r (χ r ) Young's modulus of the r th element

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Two-step design process for optimal suction muffler in reciprocating compressor

Cited by 14 publications

References 12 publications

Energy Efficient Design and Modification of an Automotive Exhaust Muffler for Optimum Noise, Transmission loss, Insertion loss and Back pressure: A Review

Energy Efficient Design and Modification of an Automotive Exhaust Muffler for Optimum Noise, Transmission loss, Insertion loss and Back pressure: A Review

Partition layout inside a muffler integrated with a thermoelectric generator: Multi-physics analysis and optimal design

Optimum core design to improve noise attenuation performance and stiffness of sandwich panels used for high-speed railway vehicles

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