RiuNet UPV Home
:
Browsing by Subject

Search RiuNet

Browse

All of RiuNet

My Account

RiuNet Help

Admin. UPV

Browsing by Subject "Surge"

Now showing items 1-11 of 11

Acoustic and pressure characteristics of a ported shroud turbocompressor operating at near surge conditions

Sharma, Sidharath; Broatch, A.; GARCIA TISCAR, JORGE; Nickson, Ambrose K.; Allport, John M. (Elsevier, 2019-05)

[EN] The operation of compressor at lower mass flow rates is limited by surge which is marked by large fluctuations in operational variables and accompanied by significant increase in noise. Ported shroud casing treatment ...
Acoustic characterisation of a small high-speed centrifugal compressor with casing treatment: an experimental study

Sharma, Sidharath; Broatch, A.; GARCIA TISCAR, JORGE; Allport, John M.; Nickson, Ambrose K. (Elsevier, 2019-12)

[EN] With the advancements in manufacturing, materials and computational methods, turbomachinery designs have become more efficient providing higher specific power and reliability with lower weight and cost. The rotational ...
Analysis of the impact of the geometry on the performance of an automotive centrifugal compressor using CFD simulations

Galindo, José; Gil Megías, Antonio; Navarro, Roberto; Tarí, Daniel (Elsevier, 2019-02-05)

[EN] During the latest years, downsizing in internal combustion engines has moved the operating conditions of the compressor closer the surge limit. Surge onset depends on the geometry of the compressor inlet and is difficult ...
Assessment of Variable Geometry Orifice Compressor Technology Impact in a New Generation of Compression Ignition Powertrains at Low-End and Transient Operation

Serrano, J.R.; Climent, H.; Gómez-Vilanova, Alejandro; Darbhamalla, Aditya; Guilain, Stéphane (MDPI AG, 2022-12)

[EN] Surge is a phenomenon that limits the operating range of the compressor at low engine speeds and high boost pressure in turbocharged powertrains. This article assesses two prototype turbochargers of variable geometry ...
Estudio del clima marítimo valenciano y su evolución a largo plazo debido a cambio climático.

Castellano Albert, Alejandro Manuel (Universitat Politècnica de València, 2021-02-04)

[ES] El efecto del cambio climático sobre los niveles de mar y los cambios en intensidades y direcciones de viento y oleaje a nivel global es un hecho. Sin embargo, en el óvalo valenciano se desconoce exactamente cuál es ...
Experimental methodology for turbocompressor in-duct noise evaluation based on beamforming wave decomposition

Torregrosa, A. J.; Broatch Jacobi, Jaime Alberto; Margot , Xandra; García Tíscar, Jorge (Elsevier, 2016-08-18)

An experimental methodology is proposed to assess the noise emission of centrifugal turbocompressors like those of automotive turbochargers. A step-by-step procedure is detailed, starting from the theoretical considerations ...
Impact of simple surge-enhancing inlet geometries on the acoustic behaviour of a turbocompressor

Broatch, A.; Margot, Xandra; Garcia Tiscar, Jorge; Roig-Villanueva, Ferran (SAGE Publications, 2018)

[EN] This paper reports the results of an experimental campaign where four different inlet geometries for the compressor of an automotive turbocharger were acoustically characterized. These four geometries (a straight pipe ...
Local flow measurements in a turbocharger compressor inlet

Torregrosa, A. J.; Broatch, A.; Margot, Xandra Marcelle; García Tíscar, Jorge; Narvekar, Y.; Cheung, R. (Elsevier, 2017)

[EN] This paper describes an experimental study carried out with the objective of characterizing flow instabilities in turbocharger compressors, specially the distribution of the high-temperature compressed back flow that ...
Measuring turbocharger compressor inlet backflow through particle image velocimetry

Torregrosa, A. J.; Broatch, A.; Pastor, José V.; GARCIA TISCAR, JORGE; Sharma, Raj K.; Cheung, R. (Elsevier, 2018-12)

[EN] An experimental measurement campaign is presented where particle image velocimetry (PIV) was used in an effort to characterize the velocity field in a turbocharger compressor when unstable operating conditions lead ...
Optimization of the inlet air line of an automotive turbocharger

Serrano Cruz, José Ramón; Margot, Xandra; Tiseira Izaguirre, Andrés Omar; García-Cuevas González, Luis Miguel (SAGE Publications (UK and US), 2013-02)

This paper presents different aspects of air inlet behaviour near the inducer of a radial compressor and shows how the geometry can contribute to its stability and performance. Unfortunately, the space reserved for ...
Potential of using a nozzle at the compressor inlet of a high-speed direct-injection diesel engine

Desantes, J.M.; Luján, José M.; Plá Moreno, Benjamín; Soler Muniesa, José Antonio (SAGE Publications, 2011)

[EN] The present work reports the effect of a nozzle placed upstream of the compressor of a high-speed direct-injection diesel engine. It has been observed that mounting a nozzle at the compressor inlet can lead to a shift ...