Pulsating flow in a planar diffuser upstream of automotive catalyst monoliths

Yamin, Ahmad Kamal Mat; Benjamin, Stephen F.; Roberts, Carol A.

doi:10.1016/j.ijheatfluidflow.2013.01.014

Cited by 11 publications

(7 citation statements)

References 23 publications

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“…So, to explain the present results more comprehensibly, we should discuss the flow in the catalyticconverter diffuser part which will bring us deeper and fruitful understanding, engineering innovation and so on. Recently, Quadri et al (2009) and Yamin et al (2013) have visualised the flow in the catalytic-converter diffuser part using a twodimensional model for steady and pulsating flows, respectively. While they are in the no-flow-deflector case of course, they have shown the importances of the catalyst-converter substrate part, the frequency of flow pulsation and so on.…”

Section: Velocity Profilementioning

confidence: 99%

On the effects of flow pulsation upon the performance of flow deflector for catalytic converter

Hirata

Tanaka

Ota

et al. 2017

Mechanical Engineering Journal

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In automobile-exhaust systems, catalytic converters are the main components to produce substantial pressure drops, which induce engine-power loss and fuel-consumption rise. In addition to the need to reduce the pressure loss, the flow passing through the catalytic substrate should be as uniform as possible, which provides a uniform thermal distribution and high catalytic-conversion efficiency. The authors have reported that a flow deflector placed inside a catalytic-converter diffuser part can drastically reduce the pressure loss and improve the velocityprofile uniformity in comparison with the no-flow-deflector case . In those reports, the authors' concern is restricted only to steady flow, due to the authors' intention to reveal fundamental features precisely under a simple and general condition. On the other hand, actual exhaust flows often include various pulsative components. So, the authors investigate the effects of flow pulsation upon the flow-deflector performances such as the pressure-loss reduction and the flow-uniformity improvement. As a result, the authors reveal that the flow deflector can reduce the pressure loss and improve the velocity-profile uniformity in comparison with the no-flow-deflector case, even for pulsating flow as well as steady flow.

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Section: Velocity Profilementioning

confidence: 99%

On the effects of flow pulsation upon the performance of flow deflector for catalytic converter

Hirata

Tanaka

Ota

et al. 2017

Mechanical Engineering Journal

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“…A schematic diagram is given in Figure 2; the set-up is presented by Mat Yamin et al [16] and is summarised here.…”

Section: Experimental Data Collectionmentioning

confidence: 99%

“…Flow predictions were obtained using the commercial CFD solver STAR-CCM+. Flow in the system has been found to be two-dimensional and symmetrical [16]. It is therefore sufficient for the flow domain to consist of half-widths of the diffuser, monolith and outlet sleeve.…”

Section: Numerical Modelmentioning

confidence: 99%

Hybrid flow modelling approach applied to automotive catalysts

Porter

Saul

Aleksandrova

et al. 2016

Applied Mathematical Modelling

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“…Notable among such company scandals and failures are Enron, WorldCom, Arthur Anderson, and Adelphia. Also in Nigeria, different corporate governance failures like Cadbury Lever Brothers, Oceanic Bank and Intercontinental Bank as opined by Stephen & Benjamin [8] has led to a poor financial performance that has stifled the internal ability of firms to maximize equity holder's wealth due to concentrated and organized corruption within the organizational structure (Honari, Munare & Potterie, 2016).…”

Section: Introductionmentioning

confidence: 99%

Corporate Governance and Firm Performance of Listed Consumer Goods Companies in Nigeria

Ariyibi

Olowofela

Isaig

2021

AJEBA

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We examine the impact of corporate governance on firm performance using the accounting measures based on the profitability status of the companies depending on cash flows and inflow from the income statement. In a sample of selected consumer goods companies, the study revealed that board size has positive significant effect on return on sales. Board size and board independence has positive significant effect on profit margin. It also revealed that board size and board independence negative significant effect on operating cash flow. Based on the findings, it is recommended that the organization should take cognizance of its board size since it influences the rate of turnover which is an intrinsic component of the overall performance of the organization. The organization should make sure the board size is regulated on a low-cost reduction basis so it does not induce a negative impact on the profitability status of the organization.

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Pulsating flow in a planar diffuser upstream of automotive catalyst monoliths

Cited by 11 publications

References 23 publications

On the effects of flow pulsation upon the performance of flow deflector for catalytic converter

On the effects of flow pulsation upon the performance of flow deflector for catalytic converter

Hybrid flow modelling approach applied to automotive catalysts

Corporate Governance and Firm Performance of Listed Consumer Goods Companies in Nigeria

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