Index Catalog // ScholarsArchive@OSU

Dynamic modeling of a refrigerant boiler for power applications

Creator:: Curry, Thomas Haitsch
Abstract:: A dynamic model of a refrigerant boiler has been produced by the use of distributed parameter modeling techniques. A number of elementary cases were studied and were used as an aid in the final model formulation. Modeling using distributed parameters employed the use of mesh equations which were then reorganized...
Resource Type:: Masters Thesis
Full Text:: at ify(4)60 + fs(4) I s dS + I v dV at {fv(pe)dV} + fs(pe) 1.7 e = -Is; dS + fvq"dV + f (.7 1)ds

Study of Energy Harvesting Performance of Oscillating Airfoils using a Discrete Vortex Model

Creator:: Kamrani Fard, Kiana
Abstract:: The energy harvesting performance of oscillating airfoils is studied using a discrete vortex model (DVM) with a leading-edge separation criterion. The airfoil undergoes a combined sinusoidal heaving and pitching motion at reduced frequencies of k = 0.06 − 0.16, with heaving amplitude of h0 = 0.5c, and pitching amplitude of...
Resource Type:: Dissertation

High cycle fatigue modeling and analysis for deck floor truss connection details

Creator:: DePiero, Anthony H.
Abstract:: The Oregon Department of Transportation is responsible for many steel deck truss bridges containing connection details that are fatigue prone. A typical bridge, the Winchester Bridge in Roseburg, Oregon, was analyzed to assess the loading conditions, stress levels, and fatigue life of the connection details. The analysis included linear-elastic beam...
Resource Type:: Masters Thesis
Full Text:: factors. The stress intensity factor is described by [Fisher, et al, 1989] as K = Fe Fs Fw Fg a (3.3-3

A study of micro-scale, fractal-like branching flow networks for reduced pumping power and improved temperature uniformity

Creator:: Alharbi, Ali Y.
Abstract:: A first generation, one-dimensional predictive model is proposed for designing heat sinks with fractal flow networks. A three-dimensional computational fluid dynamics (CFD) model is analyzed as a means for validating the model and identifying areas for improvement. Two separate CFD models were developed. One was analyzed with conjugate heat transfer...
Resource Type:: Masters Thesis

The Global Consumption Speeds of Premixed Large-Hydrocarbon Fuel/Air Turbulent Bunsen Flames

Creator:: Fillo, Aaron Jesse
Abstract:: Large-hydrocarbon fuels are used for ground and air transportation because of their high energy-density and will be for the foreseeable future. However, combustion of large-hydrocarbon fuels in a turbulent environment is poorly understood and difficult to predict. The turbulent flame speed, which is the velocity at which a flame front...
Resource Type:: Masters Thesis

An experimental study of the acoustical characteristics of dampers in air conditioning systems

Creator:: Yun, Kyung Woo
Abstract:: The noise problem in air conditioning systems is receiving ever increasing attention because of the importance of noise on a comfortable human environment. Some work has been done on the solutions to the noise problem by an investigation of a few system elements. The acourstical characteristics of dampers become more...
Resource Type:: Masters Thesis

Computer and heating and air conditioning

Creator:: Hafez, Ghassan M. Ihsan
Abstract:: The repetitious nature of air conditioning calculation leads to arithmetic errors and a high cost of designing air conditioning systems. Short cut calculations are employed to limit the calculation and the chance of making errors. Computers with their high speed of calculation and the ability to make limited "logic's decisions...
Resource Type:: Masters Thesis
Full Text:: 50 Y=2.55+2.437*ÇOSTH+n.317*rCSTH**2 G0 TO 8 55 Y=0.45 58 DNI=C(N)*DNI DVI=DNI*lC(N)*Y+(RHG/2.G

An analytical model for predicting truck performance on interstate highways

Creator:: Cantwell, William Curtis
Abstract:: This thesis describes a Truck Performance Simulation Model developed for use in a United States Department of Transportation university research project entitled "The Energy, Economic and Environmental Consequences of Increased Vehicle Size and Weight." The performance of the truck is found by specifying its engine, driveline and tire characteristics and...
Resource Type:: Masters Thesis
Full Text:: 110 F (289 and 317 K) (20). The horsepower correction factor is calculated during the initialization

Transient fuel pin temperature calculations using describing functions

Creator:: Guidotti, Timothy E.
Abstract:: An important element in rector safety and fuel performance assessments is the efficient calculation of the time dependent temperature profiles within reactor fuel pins. Because the fuel pins have temperature dependent thermal properties, the governing partial differential equations are nonlinear. Traditionally, finite difference or finite element methods have been used...
Resource Type:: Masters Thesis
Full Text:: ,$)] (111.39) This expression contains three unknowns. The first, fs(Ez,$), is the double transformed

Computer simulation of a combined-cycle biomass-fueled power plant

Creator:: Fox, Stephen John
Abstract:: This thesis presents thermodynamic evaluations of various biomass-fueled combined-cycle power plants using a computer model developed for simulating such plants. The combined-cycle systems Investigated are characterized by having a wood-fueled combustor, an indirect-fired gas turbine, and a steam cycle. This work was part of a larger biomass energy project at...
Resource Type:: Masters Thesis
Full Text:: , cu. ft/min dP... -- delta P (pressure) EFF... -- efficiency fou... -- fouling in heat exchanger fs

ScholarsArchive@OSU

Dynamic modeling of a refrigerant boiler for power applications

Study of Energy Harvesting Performance of Oscillating Airfoils using a Discrete Vortex Model

High cycle fatigue modeling and analysis for deck floor truss connection details

A study of micro-scale, fractal-like branching flow networks for reduced pumping power and improved temperature uniformity

The Global Consumption Speeds of Premixed Large-Hydrocarbon Fuel/Air Turbulent Bunsen Flames

An experimental study of the acoustical characteristics of dampers in air conditioning systems

Computer and heating and air conditioning

An analytical model for predicting truck performance on interstate highways

Transient fuel pin temperature calculations using describing functions

Computer simulation of a combined-cycle biomass-fueled power plant

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