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Article
Publication date: 3 July 2020

Yong Li, Gongnan Xie and Bengt Ake Sunden

The purpose of this paper is to numerically study the influence of wall conduction on the heat transfer of supercritical n-decane in the active regenerative cooling channels.

Abstract

Purpose

The purpose of this paper is to numerically study the influence of wall conduction on the heat transfer of supercritical n-decane in the active regenerative cooling channels.

Design/methodology/approach

A horizontally placed rectangular pipe with a solid zone and another one without a solid zone were used. A drastic variation of thermo-physical properties was emphatically addressed. After the verification of mesh and turbulence models comparing with the experimental results, a mesh number of 4.5 M and the low Reynolds number SST k-ω turbulence model were chosen. The solution of the governing equations and the acquisition of the numerical results were executed by the commercial software FLUENT 2020 R1.

Findings

The numerical results indicate that there is a heat transfer deterioration (HTD) potential for the upper wall, lower wall and sidewall with the decrease of mass flux. Due to wall conduction, the distribution of the fluid temperature at spanwise-normal planes becomes uniform and this feature also takes advantage of the relatively uniform transverse velocity. For the streamwise-normal planes, the low fluid temperature appears close to the upper wall at the region near the sidewall and vice versa for the region near the centre. Undoubtedly, the secondary flow at the cross-section plays a crucial role in this process and the relatively cool mainstream is affected by the vortices.

Originality/value

This study warns that the wall conduction must be considered in the practical design and thermal optimization due to the sensibility of thermo-physical properties to the heat flux. The secondary flow caused by the buoyancy force (gravity) plays a significant role in the supercritical heat transfer and mixed convection heat transfer should be further studied.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 31 no. 3
Type: Research Article
ISSN: 0961-5539

Keywords

Article
Publication date: 1 March 1974

Tom Schultheiss, Lorraine Hartline, Jean Mandeberg, Pam Petrich and Sue Stern

The following classified, annotated list of titles is intended to provide reference librarians with a current checklist of new reference books, and is designed to supplement the…

Abstract

The following classified, annotated list of titles is intended to provide reference librarians with a current checklist of new reference books, and is designed to supplement the RSR review column, “Recent Reference Books,” by Frances Neel Cheney. “Reference Books in Print” includes all additional books received prior to the inclusion deadline established for this issue. Appearance in this column does not preclude a later review in RSR. Publishers are urged to send a copy of all new reference books directly to RSR as soon as published, for immediate listing in “Reference Books in Print.” Reference books with imprints older than two years will not be included (with the exception of current reprints or older books newly acquired for distribution by another publisher). The column shall also occasionally include library science or other library related publications of other than a reference character.

Details

Reference Services Review, vol. 2 no. 3
Type: Research Article
ISSN: 0090-7324

Article
Publication date: 1 August 2010

Varinder S. Kanwar, Naveen Kwatra, Pankaj Aggarwal and Ramesh P. Singh

In developing countries such as India, it is common practice to use low‐quality building materials, the strength of such materials reduce with time, which affects the lifespan of…

2193

Abstract

Purpose

In developing countries such as India, it is common practice to use low‐quality building materials, the strength of such materials reduce with time, which affects the lifespan of buildings. The wind, rain, seepage, and surface runoff are other key factors responsible for building damage and exterior degradation. The increasing industrial growth in and around urban areas is responsible for increasing industrial and anthropogenic emissions that are found to accelerate degradation of the buildings that affects their physical appearance. In an area prone to natural hazards such as earthquakes, volcanoes, subsidence, floods, lightning, tornados, and cyclone/hurricanes, huge amounts of damage throughout the globe has been experienced. For the purpose of assuring safety due to natural hazards, it is necessary to monitor the damage for its existence, its location and extent. Undetected damage may potentially lead to risk of vulnerability caused by natural hazards and eventually to catastrophic failure. Hence, rapid structural damage detection is essential and important to save human life due to failure of structures or buildings. Most of the time, human loss occurs due to damage to the buildings. This paper aims to address these issues.

Design/methodology/approach

In the present study, numerous experiments have been carried out on two reinforced concrete building test specimens and on seven existing reinforced cement concrete structures.

Findings

The results presented here in this study show that the vibration measurements can be used to monitor the health of framed reinforced cement concrete buildings.

Originality/value

The present study is part of doctoral thesis of Varinder S. Kanwar, an original research work.

Details

International Journal of Structural Integrity, vol. 1 no. 3
Type: Research Article
ISSN: 1757-9864

Keywords

Book part
Publication date: 29 November 2019

Emrah Ozkul, Hakan Boz, Bilsen Bilgili and Erdogan Koc

This chapter explains the role and potential of colour and lighting as two important elements of the service atmosphere in tourism and hospitality service encounters. The chapter…

Abstract

This chapter explains the role and potential of colour and lighting as two important elements of the service atmosphere in tourism and hospitality service encounters. The chapter first explains the importance of colour and lighting in services from the perspective of customers’ sensory perceptions. Then, the chapter provides examples to demonstrate how psychological/neuro-marketing tools of Eye Tracker and Facial Recognition, Galvanic Skin Response (GSR) and Heart Rate (HR) can be used to understand the role of colour and lighting in customer satisfaction in tourism and hospitality service encounters. Based on this perspective, the study offers recommendations to design service environments in terms of colour and lighting.

Details

Atmospheric Turn in Culture and Tourism: Place, Design and Process Impacts on Customer Behaviour, Marketing and Branding
Type: Book
ISBN: 978-1-83867-070-2

Keywords

Article
Publication date: 1 March 1951

In a debate in the House of Commons on February 2nd, the following Motion was proposed and agreed : – “That this House is of opinion that further steps should be taken by His…

Abstract

In a debate in the House of Commons on February 2nd, the following Motion was proposed and agreed : – “That this House is of opinion that further steps should be taken by His Majesty’s Government to encourage cleanliness in the preparation and serving of food in retail shops and catering establishments.”

Details

British Food Journal, vol. 53 no. 3
Type: Research Article
ISSN: 0007-070X

Article
Publication date: 1 August 1996

Evelyn Kerslake and Anne Goulding

A variety of rising tensions have accompanied the development of the UK's flexible workforce and the debate around training for these workers is located among these competing…

77

Abstract

A variety of rising tensions have accompanied the development of the UK's flexible workforce and the debate around training for these workers is located among these competing demands. As the proportion of flexible workers in the labour market has increased, their systematic exclusion, in comparison to permanent full‐time workers, from certain types of training has been documented. This has been accompanied by widespread calls for the UK to develop a better qualified and skilled workforce. This tension — affecting in different ways the labour market, employers and workers — now has legislative equal opportunities implications. These issues are explored in a case study of the library and information sector.

Details

Equal Opportunities International, vol. 15 no. 8
Type: Research Article
ISSN: 0261-0159

Article
Publication date: 1 May 1960

Monsanto Moves. SIR WILLIAM GARRETT has relinquished his executive responsibilities with Monsanto Chemicals Ltd., but will continue as a member of the board. Since 1957 Sir…

Abstract

Monsanto Moves. SIR WILLIAM GARRETT has relinquished his executive responsibilities with Monsanto Chemicals Ltd., but will continue as a member of the board. Since 1957 Sir William had held the position of personnel director of Monsanto, duties which will now be assumed by N. F. PATTERSON, director in charge of engineering and purchasing. Sir William is chairman of the A.B.C.M. and director of Metal Industries Ltd.

Details

Anti-Corrosion Methods and Materials, vol. 7 no. 5
Type: Research Article
ISSN: 0003-5599

Article
Publication date: 1 January 1986

C.I. Wall

The paper introduces the concept of Polymer Thick Film for low temperature resistor and conductor printing. It describes the materials and their characteristics and outlines some…

Abstract

The paper introduces the concept of Polymer Thick Film for low temperature resistor and conductor printing. It describes the materials and their characteristics and outlines some of the applications for which PTF can be and is being used.

Details

Circuit World, vol. 12 no. 2
Type: Research Article
ISSN: 0305-6120

Article
Publication date: 1 February 1986

C.I. Wall

Screenprinting has formed an integral part of the manufacturing process for PCBs since the first boards were produced. This paper describes the types of product used, the areas of…

Abstract

Screenprinting has formed an integral part of the manufacturing process for PCBs since the first boards were produced. This paper describes the types of product used, the areas of application, and suggests methods for obtaining the best results by exploring printing parameters and indicating methods of optimising them to minimise faults.

Details

Circuit World, vol. 12 no. 3
Type: Research Article
ISSN: 0305-6120

Article
Publication date: 1 April 1943

In an airfoil system tapered spanwise in thickness, a fixed airfoil having a substantially flat trailing edge normal to the airfoil chord plane, hinge means defining two hinge…

Abstract

In an airfoil system tapered spanwise in thickness, a fixed airfoil having a substantially flat trailing edge normal to the airfoil chord plane, hinge means defining two hinge axes one close to one side of the airfoil trailing edge and one close to the other side of the airfoil trailing edge, said hinge axes converging toward one another, spanwise, in accordance with the taper of the airfoil system, a spanwise tapered control airfoil having devices engaging said hinge means, mechanism to move the airfoil upon said hinge means, and reliefs at said hinge means to allow of control airfoil movement to one side of neutral about the hinge axis closest to the one side, and to allow of control airfoil movement to the other side of neutral about the other hinge axis closest to the other side.

Details

Aircraft Engineering and Aerospace Technology, vol. 15 no. 4
Type: Research Article
ISSN: 0002-2667

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