Engineering Commons^™

Convective Flow Boiling Of Refrigerant-Oil Mixtures On An Enhanced Tube Bundle, N.H. Kim, T.R. Shin, E.R. Lee

Enhanced, Compact and Ultra-Compact Heat Exchangers: Science, Engineering and Technology

No abstract provided.

Effect Of Corrugation Angle On The Hydrodynamic Behaviour Of Power-Law Fluids During A Flow In Plate Heat Exchangers, C.S. Fernandes, R.P. Dias, J.M. Nóbrega, J.M. Maia

Enhanced, Compact and Ultra-Compact Heat Exchangers: Science, Engineering and Technology

No abstract provided.

Effectiveness Due To Manufacturing And Fouling, W. Shang, R. W. Besant

Enhanced, Compact and Ultra-Compact Heat Exchangers: Science, Engineering and Technology

No abstract provided.

Experimental And 3d Numerical Study Of Air Side Heat Transfer And Pressure Drop Of Slotted Fin Surface, W.Q. Tao, Z.G. Qu, Y.L. He

Enhanced, Compact and Ultra-Compact Heat Exchangers: Science, Engineering and Technology

No abstract provided.

The Manufacture Of Micro Cross-Flow Heat Exchangers By Selective Laser Melting, S. Tsopanos, C. J. Sutcliffe, I. Owen

Enhanced, Compact and Ultra-Compact Heat Exchangers: Science, Engineering and Technology

No abstract provided.

Study On Compact Heat Exchanger For Vehicular Gas Turbine Engine, S. Akama, Y. Himeji, A. Minami, T. Yoshikawa

Enhanced, Compact and Ultra-Compact Heat Exchangers: Science, Engineering and Technology

No abstract provided.

Keynote Lecture: Numerical Simulation And Experimental Study Of Flow And Heat Transfer Characteristics Of Shell Side Fluid In Shell-And-Tube Heat Exchangers, Y.L. He, W.Q. Tao, B. Deng, X. Li, Y. Wu

Enhanced, Compact and Ultra-Compact Heat Exchangers: Science, Engineering and Technology

No abstract provided.

Preface, Ramesh K. Shah, Masaru Ishizuka, Thomas M. Rudy, Vishwas V. Wadekar

Enhanced, Compact and Ultra-Compact Heat Exchangers: Science, Engineering and Technology

No abstract provided.

A Rotating Shallow Cone Evaporator, R.S. Jebson

Enhanced, Compact and Ultra-Compact Heat Exchangers: Science, Engineering and Technology

No abstract provided.

Thermal Conductivity Of A Nano-Structured Material, K. Miyazaki, H. Tsukamoto, R.G. Yang, G. Chen

Enhanced, Compact and Ultra-Compact Heat Exchangers: Science, Engineering and Technology

No abstract provided.

Table Of Contents, The Editors

Enhanced, Compact and Ultra-Compact Heat Exchangers: Science, Engineering and Technology

No abstract provided.

Experimental Study On Port To Channel Flow Distribution Of Plate Heat Exchangers, F. A. Tereda, N. Srihari, B. Sunden, S. K. Das

Enhanced, Compact and Ultra-Compact Heat Exchangers: Science, Engineering and Technology

No abstract provided.

A Study Of Channel Optimization In Cooling Spreader On A Smaller And Transient Heat Source, K. Yazawa, M. Ishizuka

Enhanced, Compact and Ultra-Compact Heat Exchangers: Science, Engineering and Technology

No abstract provided.

Design Considerations For Compact Ceramic Offset Strip-Fin, High Temperature Heat Exchangers, S. Subramanian, V. Ponyavin, C.R. Delosier, Y. Chen, A.E. Hechanova

Enhanced, Compact and Ultra-Compact Heat Exchangers: Science, Engineering and Technology

No abstract provided.

Keynote Lecture: High Temperature Heat Exchangers, B. Sundén

Enhanced, Compact and Ultra-Compact Heat Exchangers: Science, Engineering and Technology

No abstract provided.

Heat Exchangers In Solid Oxide Fuel Cell Systems - Their Roles And Features, H. Yoshida, H. Iwai

Enhanced, Compact and Ultra-Compact Heat Exchangers: Science, Engineering and Technology

No abstract provided.

Air-Side Thermal Hydraulic Performance Of An Offeser-Strip Fin Array At Reynalds Numbers Up To 120,000, G.J. Michna, A.M. Jacobi, R.L. Burton

Enhanced, Compact and Ultra-Compact Heat Exchangers: Science, Engineering and Technology

No abstract provided.

Natural Convection In Heat Exchangers – A New Incentive For More Compact Heat Exchangers, T. Aicher, H. Martin

Enhanced, Compact and Ultra-Compact Heat Exchangers: Science, Engineering and Technology

No abstract provided.

Effects Of Heat Exchanger Flow Channel Variations On Pressure Drop And Modified Dlc-Coatings For The Mitigation Of Scaling On Heat Transfer Surfaces, W. Augustin, J. Zhang, I. Bialuch, S. Scholl

Enhanced, Compact and Ultra-Compact Heat Exchangers: Science, Engineering and Technology

No abstract provided.

Entrance And Wall Conduction Effects In Parallel Flow Heat Exchangers, A. Fakheri, H. Al-Bakhit

Enhanced, Compact and Ultra-Compact Heat Exchangers: Science, Engineering and Technology

No abstract provided.

Enhancement Of Boiling On A Small Diameter Tube Due To Bubbles From Below, E. Adom, P. A. Kew, K. Cornwell

Enhanced, Compact and Ultra-Compact Heat Exchangers: Science, Engineering and Technology

No abstract provided.

Experimental Measurements Of Longitudinal Load Distributions On Friction Stir Weld Pin Tools, Aaron L. Stahl

Theses and Dissertations

The longitudinal forces generated from the Friction Stir Welding process are substantial. An understanding of these forces is critical to proper tool design. This study describes a technique to measure the longitudinal force distribution on a friction stir weld pin tool. Total longitudinal forces were recorded on a dynamometer while welding 6061 aluminum with non-threaded pins that varied in length and diameter. A model was developed that characterizes pin force as a function of pin length and diameter. Results suggest that force generally increases with pin length, while forces remain relatively constant with pin diameter. Unexpected force variation was found …

Detection Of Microcracks During Bone Cutting Using Acoustic Emission Techniques, Ashkan Safari, Ger Reilly, Brendan Mccormack

Conference Papers

Surgeons may use a number of cutting instruments such as osteotomes and chisels to cut bone during operative procedures. The initial loading of cortical bone during the cutting process results in the formation of microcracks in the vicinity of the cutting zone with main crack propagation to failure occurring with continued loading; microcracking acts as a stimulus for main crack formation and has also been shown to occur during the propagation of the main crack. It has also been reported that Acoustic Emission (AE) is generated due to microcrack formation and crack growth, prior to, and during final fracture in …

2005 Fall Engr333 Project Assignment, Matthew K. Heun

ENGR 333

In the Fall 2005 semester, I challenged the ENGR333 students to “develop realistic designs for the wellness center HVAC system and upgraded physical plant infrastructure.”

Customer

The customer for this project was Calvin’s VP for finance Henry DeVries.

Rupture Of A Two-Dimensional Alkane Crystal, Shishir Prasad, Ali Dhinojwala

College of Polymer Science and Polymer Engineering

We have studied the breaking of a two-dimensional alkane crystal above the disordered melt using an oscillating bubble rheometer. Surface tension changes abruptly during the expansion and contraction cycle. We postulate that this is due to rupture of the 2D crystal at grain boundaries. The magnitude of the abrupt change in surface tension decreases with a decrease in the rate of change of bubble surface area with a power law exponent of 0.8. The interfacial area formed after rupture decreases with a decrease in rate. These results provide new insights in understanding defect-mediated rupture in confined geometry.

The Open Network Laboratory (A Resource For High Performance Networking Research), John Dehart, Fred Kuhns, Jyoti Parwatikar, Jonathan Turner, Ken Wong

All Computer Science and Engineering Research

The Open Network Laboratory (ONL) is a remotely accessible network testbed designed to enable network researchers to conduct experiments using high performance routers and applications. ONL™s Remote Laboratory Interface (RLI) allows users to easily configure a network topology, initialize and modify the routers™ routing tables, packet classification tables and queuing parameters. It also enables users to add software plugins to the embedded processors available at each of the routers™ ports, enabling the introduction of new functionality. The routers provide a large number of built-in counters to track various aspects of system usage, and the RLI software makes these available through …

The Effect Of Particles On Dynamic Recrystallization And Fabric Development Of Granular Ice During Creep, Min Song, Ian Baker, David M. Cole

Dartmouth Scholarship

The mechanical behavior and microstructural evolution of laboratory-prepared, particle-free fresh-water ice and ice with 1 wt.% (~0.43 vol.%) silt-sized particles were investigated under creep with a stress level of 1.45 MPa at −10°C. The particles were present both within the grains and along the grain boundaries. The creep rates of specimens with particles were always higher than those of particle-free ice. Dynamic recrystallization occurred for both sets of specimens, with new grains nucleating along grain boundaries in the early stages of creep. The ice with particles showed a higher nucleation rate. This resulted in a smaller average grain-size for the …

Modified Log–Wake Law For Zero-Pressure-Gradient Turbulent Boundary Layers, Junke Guo, Pierre Y. Julien, Meroney N. Meroney

Department of Civil and Environmental Engineering: Faculty Publications

This paper shows that the turbulent velocity profile for zero-pressure-gradient boundary layers is affected by the wall shear stress and convective inertia. The effect of the wall shear stress is dominant in the so-called overlap region and can be described by a logarithmic law in which the von Karman constant is about 0.4 while the additive constant depends on a Reynolds number. The effect of the convective inertia can be described by the Coles wake law with a constant wake strength about 0.76.A cubic correction term is introduced to satisfy the zero velocity gradient requirement at the boundary layer edge. …

Optimization Of The Fuzzy Logic Controller For An Autonomous Uav, Jon C. Ervin, Sema E. Alptekin, Dianne J. Deturris

Industrial and Manufacturing Engineering

In this paper, we describe the optimization of membership functions in an application employing a hierarchical Fuzzy Logic Controller. The size of the rule base is made manageable by using a unique formulation, known as Combs method, to help control the problem of ‘exponential rule expansion’. The optimization is performed using a steady state genetic algorithm with a dynamic fitness function. The controller being developed is designed to fly a small, autonomous parafoil, suitable for short-range reconnaissance and land survey applications. The optimization process is performed in the Matlab/Simulink software environment and incorporates fuzzy logic modules developed in the Matlab …

Applicationofspectroscopic Ellipsometry To In-Stu. Real-Time Fabrication Of Multiple Layer Alternating High/Low Refractive Index Filters, Blaine D. Johs, Jeffery S. Hale, John A. Woollam, Craig M. Herzinger

Department of Electrical and Computer Engineering: Faculty Publications

Disclosed is application of oblique angle of incidence, reflection and/or transmission mode spectroscopic ellipsometry PSI and/or DELTA, (including combinations thereof and/or mathematical equivalents), vs. wavelength data to monitor and/or control fabrication of multiple layer high/low refractive index band-pass, band-reject and varied attenuation vs. wavelength filters, either alone or in combination with transmissive non-ellipsometric electromagnetic beam turning point vs. layer data obtained at an essentially normal angle of incidence.