Browsing Mechanical and Mechatronics Engineering by Issue Date
Now showing items 61-80 of 1494
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Effect of Pre-Bending and Hydroforming Parameters on the Formability of Advanced High Strength Steel Tube
(University of Waterloo, 2006)With increasing fuel costs and the current drive to reduce greenhouse gas emissions and fuel consumption, a need to reduce vehicle weight is apparent. Weight reduction can be achieved by replacing conventionally stamped ... -
Optimization of Heat Sinks with Flow Bypass Using Entropy Generation Minimization
(University of Waterloo, 2006)Forced air cooling of electronic packages is enhanced through the use of extended surfaces or heat sinks that reduce boundary resistance allowing heat generating devices to operate at lower temperatures, thereby improving ... -
Experimental and Analytical Analysis of Perimeter Radiant Heating Panels
(University of Waterloo, 2006)In recent years the U. S. and Canada have seen a steady increase in energy consumption. The U. S. in particular uses 25% more energy than it did 20 years ago. With declining natural resources and an increase ... -
Solar Absorption by Each Element in a Glazing/Shading Layer Array
(American Society of Heating, Refrigerating and Air-Conditioning Engineers, 2006)Window solar gain can strongly influence building energy consumption and peak cooling load. Shading devices such as venetian blinds, roller blinds, and drapes are routinely used to control solar gain. There is a strong ... -
Simplified Solar Optical Calculations For Windows With Venetian Blinds
(2006)Solar gain through a window represents the most variable heat gain imposed on an indoor space. It is also likely to represent the largest heat gain of the indoor space. Shading devices like venetian blinds roller blinds ... -
Thermal Resistance of a Window with an Enclosed Venetian Blind: Guarded Heater Plate Measurements
(American Society of Heating, Refrigerating and Air-Conditioning Engineers, 2006)Window solar gain is known to have a strong influence on building energy consumption and peak cooling load. Venetian blinds are routinely used to control solar gain. Software based on one-dimensional models is available ... -
Calculating Center-Glass Performance Indices of Windows with a Diathermanous Layer
(American Society of Heating, Refrigerating and Air-Conditioning Engineers, 2006)The fenestration chapter of the 2005 ASHRAE Hand-book—Fundamentals (ASHRAE 2005) has long included methods for determining the U-factor and solar heat gain coef-ficient (SHGC), or window performance indices, using the ... -
Development and characterization of a laminar aerosol flow tube
(AIP, 2006-03)We have developed a new laminar aerosol flow tube (AFT) to study transformations such as ice nucleation, deliquescence, and efflorescence in model atmospheric aerosols. The apparatus consists of four sections which can be ... -
Flow visualization of natural convection in a tall, air-filled vertical cavity
(Elsevier, 2006-03-01)Natural convection of air in a tall vertical cavity was studied using a smoke patterns and interferometry. Experiments covered Rayleigh numbers of 4850 < Ra < 54,800 and aspect ratio A ≈ 40. Secondary cells were noted at ... -
A CFD Investigation of Balcony Spill Plumes
(University of Waterloo, 2006-12-05)A series of numerical modeling studies were conducted to characterize the mass flow rates in balcony spill plumes (BSP), a type of buoyant fire plume occurring in atria. The variation of BSP mass flow rate as a function ... -
Comprehensive, Consistent and Systematic Approach to the Mathematical Modeling of PEM Fuel Cells
(University of Waterloo, 2006-12-12)Polymer electrolyte membrane (PEM) fuel cells are a promising zero-emission power source for transportation applications. An important tool for advancing PEM fuel cell technology is mathematical modeling. Mathematical ... -
Dynamic Modelling and Stability Controller Development for Articulated Steer Vehicles
(University of Waterloo, 2007-01-03)In this study, various stability control systems are developed to remove the lateral instability of a conventional articulated steer vehicle (ASV) during the oscillatory yaw motion or “snaking mode”. First, to identify the ... -
The Design and Evaluation of a Microfluidic Cell Sorting Chip
(University of Waterloo, 2007-01-12)Many applications for the analysis and processing of biological materials require the enrichment of cell subpopulations. Conventional cell sorting systems are large and expensive with complex equipment that necessitates ... -
Numerical Modeling for the Prediction of Primary Blast Injury to the Lung
(University of Waterloo, 2007-01-12)As explosive blasts continue to cause casualties in both civil and military environments, there is a need for increased understanding of the mechanisms of blast trauma at the organ level and a need for a more detailed ... -
A three-dimensional damage percolation model
(University of Waterloo, 2007-01-19)A combined experimental and analytical approach is used to study damage initiation and evolution in three-dimensional second phase particle fields. A three-dimensional formulation of a damage percolation model is developed ... -
Autonomous Control of a Differential Thrust Micro ROV
(University of Waterloo, 2007-01-22)Underwater vehicles that use differential thrust for surge and yaw motion control have the advantage of increased maneuverability. Unfortunately, such vehicles usually don’t have thrusters/actuators to control the lateral ... -
The Formation and Run-off of Condensate on a Vertical Glass Surface: An Experimental Study
(University of Waterloo, 2007-01-23)An experimental study of condensate was performed by exposing a sheet of glass, cooled at its bottom edge, to an enclosure with a controlled environment. The air in the enclosure was maintained at a constant relative ... -
Image-Based Feature Tracking Algorithms for Real-Time Clad Height Detection in Laser Cladding
(University of Waterloo, 2007-01-31)In laser cladding, a material, usually in the form of powder, is deposited on a substrate. Powder particles are intermingled with inert gas and fed by a powder feeder system on the substrate. Laser is employed to melt the ... -
Torque Control Strategies for AWD Electric Vehicles
(University of Waterloo, 2007-02-21)There is a fundamental shift occurring in the design of passenger vehicles for North American markets. While for decades automotive manufacturers have relied on internal combustion engines burning fossil fuels, the early ... -
Tools for Modelling and Identification with Bond Graphs and Genetic Programming
(University of Waterloo, 2007-03-07)The contributions of this work include genetic programming grammars for bond graph modelling and for direct symbolic regression of sets of differential equations; a bond graph modelling library suitable for programmatic ...