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This paper sets out to perform a detailed numerical study of turbulent channel flow with strong temperature gradients using large‐eddy simulations.

A recently developed time‐accurate algorithm based on a predictor‐corrector time integration scheme is used in the simulations. Spatial discretization is performed on a collocated grid system using a flux interpolation technique. This interpolation technique avoids the pressure odd‐even decoupling problem that is typically encountered in collocated grids. The eddy viscosity is calculated with the extension of the dynamic Smagorinsky model to variable‐density flows.

The mean velocity profile at the cold side deviates from the classical isothermal logarithmic law of the wall. Nonetheless, at the hot side, there is a better agreement between the present results and the isothermal law of the wall. Further, the numerical study predicts that the turbulence kinetic energy near the cold wall is higher than near the hot one. In other words heat addition tends to laminarize the channel flow. The temperature fluctuations were also higher in the vicinity of the cold wall, even though the peak of these fluctuations occurs at the side of the hot wall.

The findings of the paper have applications in the design and analysis of convective heat transfer equipment such as heat exchangers and cooling systems of nuclear reactors.

The paper presents the first numerical results for non‐isothermal turbulent channel flow with high wall‐temperature ratios (up to 9). These findings can be of interest to scientists carrying out research in turbulent flows.

THE 1956 COMMERCIAL MOTOR SHOW WILL be officially opened at Earls Court, London, at midday on Friday, the 21st September, by the President of the Board of Trade.

This paper outlines some of the background of and constraints facing the emergence of a new industry, focused not on buildings as such but on residential fit-out – the integrated kit-of-parts “behind your front door.” Residential application of the distinction between base building (support) and fit-out (infill), although sharing the same principles as the well-established office building and shopping mall sectors, is particularly important because it affects a very large market whose potential is not yet exploited but is arguably nascent.

It is well understood that industrial manufacturing processes – now becoming “product service systems” in the consumer sector – are most effective and dynamic where individual users are directly served, as seen in the automotive and electronics/communications sectors. Construction of base buildings understood as “infrastructures for living” is capable of stimulating the evolution of a fit-out industry that will itself accelerate innovation and distribution of new domestic fit-out services and systems.

In general, the creation of a genuine fit-out industry is not a technical or industrial design problem. Material subsystems and components like partitioning, bathroom and kitchen equipment, as well as “plug-and-play” piping and wiring are available or are being invented and approved in regulatory regimes internationally. While some smart products are still needed, the problem now is essentially a business proposition. By shifting to the provision of benefits rather than simply manufacturing products, companies may find a competitive advantage in a sector of the building industry now poised for an innovation leap. In the US and other developed countries, this is particularly compelling given the sustainability agenda, smart growth and increased demand for consumer-oriented production. In this perspective, the trend toward base building architecture allows the building industry to effectively come to terms with new and creative modes of industrial production.

Electric Utility Diversification and Efficient Capital Markets Over 60% of investor owned electric utilities have experimented with diversification into lines of business other than the traditional generation, transmission, and distribution of electricity. They diversify for a variety of reasons, but a primary goal is to improve their overall financial performance. Existing studies have found that diversified utilities outperform non‐diversified utilities. Measures of performance have included EPS growth, price‐earnings multiples, market‐book ratios and internal rates of return. However, many of these studies do not compare performance on a risk‐adjusted basis nor indicate whether differences are statistically significant. In contrast, this study compares performance using the efficient market hypothesis. Regression results indicate that there is no significant difference in risk between portfolios comprised of diversified utilities and non‐diversified utilities. Furthermore, no significant difference in return was observed. The performance of the two portfolios does not appear to differ in risk or return. These results tend to support the efficient market hypothesis concerning stockholders' inability to gain an advantage from publicly available information. Differences in company performance that are anticipated and already reflected in stock price do not result in differences in returns to stockholders.

The purpose of this paper is to investigate the combined effects of buoyancy force and variable viscosity on unsteady flow and heat transfer of water-based nanofluid containing copper and alumina as nanoparticles through a porous pipe.

Using the Boussinesq and boundary-layer approximations with Buongiorno nanofluid model. The governing nonlinear partial differential equations for the continuity, momentum and energy balance are formulated. The equations obtained are solved numerically using a semi-discretization finite difference method (know) as method of line coupled with Runge-Kutta-Fehlberg integration scheme.

Numerical results for the skin-friction, heat transfer and for the velocity and temperature profiles are obtained. The results show that with suction, Cu-water produces higher skin friction and heat transfer rate than Al₂O₃-water. Both nanofluids velocity and temperature increase with a decrease in viscosity and an increase in buoyancy force intensity.

Buoyancy-driven flow and heat transfer in porous geometries has many significant applications in industrial and engineering such as, electrical and microelectronic equipments, solar-collectors, geothermal engineering, petroleum reservoirs, thermal buildings insulation. This work provides very important information for researchers on this subject.

This paper illustrates the effects of buoyancy force and temperature dependent on heat transfer and fluid flow problem using Cu-water and Al₂O₃-water nanofluids in a porous pipe.

Five hobbing machines and a selection of hobs and gear‐cutting tools were shown by this Manchester company at the Exhibition. Of these the MT‐V spline hobbing machine is a new design. In this machine the work is held with its axis vertical. Although primarily intended for the cutting of spline shafts the machine is capable also of hobbing spur and helical gears up to 15 in. diameter. The maximum distance between work centres is 35 in., and the maximum vertical traverse of the hob slide is 23 in., which can be extended to 32 in. if a cavity can be provided in the foundation.

This paper empirically investigates the processes by which manufacturing firms create radical innovations in their core production process, referred to as radical manufacturing technology innovations (RMTI). The purpose of this paper is to improve the understanding of the processes and practices manufacturing firms use to create RMTI.

Creation processes for 23 RMTI projects from diverse industry and technology contexts are explored. Data were collected via semi-structured interviews, and an inductive analysis was carried out to identify similarities and differences in RMTI types and creation processes.

Three types of RMTI and three alternative RMTI creation processes are revealed and characterized. An integrated view is developed of the activities of the equipment supplier and the manufacturing firm, highlighting their different roles and interaction across the three RMTI creation process types.

The exploratory design limits the depth of the analysis per RMTI project, and the focus is on manufacturing technology innovations in one country. The results extend previous case and context-specific findings on RMTI creation processes and provide novel frameworks for cross-case comparisons.

The manufacturing firms’ proactive role in RMTI creation is defined. A framework is proposed for using different RMTI creation processes for different types of RMTI.

This study addresses recent calls for empirical research on understanding the ways in which process innovations unfold in manufacturing firms. The findings emphasize the role of manufacturing firms as creators of RMTI in addition to their role as innovation adopters and implementers and reveal the suitability of different RMTI creation processes for different RMTI types.

Industry 4.0 is dramatically affecting businesses behaviours and strategies, transforming products design, manufacture, operations and services. An outcome of this transformation is digital servitization. This paper aims to contribute to the extant literature about digital servitization in B2B contexts by analysing how I4.0-based servitization affects the quality of supplier–customer relationships.

The authors adopted a qualitative methodology based on an exploratory multiple case study. In particular, the study included 22 Italian B2B manufacturing firms whose I4.0-based digital servitization approaches are described and, then, analysed in relation to the quality of supplier–customer relationships.

The access to customers and data is critical to enable advanced digital services and for improving relationship quality; the levels of relational intimacy and informational openness lead to two subsequent levels of data-driven efficiency and data-driven effectiveness, impacting significantly on relationship quality and enabling relational innovation.

The research explores the link, so far underestimated, between digital servitization and relationship quality in industrial contexts.