Heat dissipation, thermal stresses, size and cost are the key packaging design issues for electronic and optoelectronic instruments. As per defense requirement, instruments are expected to work satisfactorily in the temperature range of -30C to +55C. In this study, we have explored the thermal management of a sealed enclosure, envisaged as housing for handheld instruments, using different activ...

The intention of this article is to compare the containment performance of a Type II microbiological safety cabinet (MSC) confronted with the simultaneous generation of a saline nanoparticle aerosol and a tracer gas (SF(6)). The back dissemination coefficient, defined as the ratio of the pollutant concentration measured outside the enclosure to the pollutant flow rate emitted inside the enclosu...

Most portable diesel generators (often referred to as gensets) produce high sound power levels. The sound generated by various internal components of the genset is transmitted to the far field by two radiation mechanisms: sound transmits through the panels of the generator enclosure as well as propagates through any openings in the enclosure. In order to determine which mechanism to control, a ...

Contemporary design of large telescopes requires optimization of the telescope environment in order to fully realize the capabilities of advanced mirror technology, telescope control and instrumentation. Telescope enclosure design is a critical element in providing this optimized environment. Enclosures must protect the telescope while minimizing the local degradation of image quality, and the ...

Inspired by the applications in electromagnetic nanomaterials processing enclosures and hybrid fuel cell technologies, a mathematical model is presented to analyze mixed convective flow of electrically conducting nanofluids ([Formula: see text]-[Formula: text] [Formula: text]) inside square enclosure saturated with porous medium under an inclined magnetic field. The Tiwari–Das model, along visc...

The current manifestation is utilized to explicate the inspiration of combined convection flows in a cavity with square cylinder placed at center having coordinates (0.5, 0.5). To be more specific, right- and left-sided vertical walls are kept cold, lower wall heated uniform non-uniform manners, while upper horizontal moved constant velocity <mml:math xmlns:mml="http://www.w3.org/1998/Math/Math...

In this paper, an approach to the shielding effectiveness evaluation of a metallic enclosure with apertures is discussed. It has been previously shown that a simple analytical transmission line formulation gives good predictions of the shielding effectiveness of a metallic enclosure with apertures. In this work the model is extended to include the fundamental formulas to deal with the cases of ...

A new type of range searching problem, called the partial enclosure range searching problem, is introduced in this paper. Given a set of geometric objects S and a query region Q, our goal is to identify those objects in S which intersect the query region Q by at least a fixed proportion of their original size. Two variations of this problem are studied. In the first variation the objects in S a...

Organization of living environment is possible through a clear definition of private and public arenas and determinationof a spatial hierarchy. Such defined arenas increase the sense of belonging to the environment which personalizesresidential environments. Enclosure is among the quantities that play a significant role in defining the spaces. In fact,enclosure is the factor that defines a spac...

The design of future large optical telescopes must take into account the wind-induced vibration of the telescope structure that is caused by large-scale flow structures and turbulence inside the telescope enclosure when the aperture in the enclosure dome is open. However, estimating the resulting degradation in image quality is difficult due to our relatively poor understanding of the flow insi...