Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 318 for “"Physical model"”.
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Physical model of a hybrid electric drive train
… inertial mass of a hybrid electric vehicle. The model will serve as a test bed for students in 2.672 to study the energy losses between the battery, motor, and kinetic energy of the car during acceleration and regenerative braking over a range of realistic driving profiles. The goal is to …
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A physical model for tracking human seating posture
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1998.
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A physical model for the acousto-ultrasonic method
A basic physical explanation, a model, and comments on NDE application of the acoustoultrasonic method for composite materials are presented. The basis of this work is a set of experiments where a sending and a receiving piezoelectric transducer were both oriented normal to the surface, at …
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A physical model to estimate snowfall over land using microwave measurements
… study describes the methodology and results of physically based retrievals of snow falling over land surfaces. Because microwave emitted by snow-covered surfaces are highly variable, precipitating snow above such surfaces is difficult to observe using window channels that occur at low …
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Axial load transfer in large scale physical model drilled shaft foundations
… using a 16-inch diameter by 28-inch tall physical model drilled shaft foundation. A total of nine static load tests were performed in a five-foot diameter by five-foot deep calibration chamber where soil conditions could be controlled. Soils tested were a loose clean sand, dense clean sand …
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Inverse uncertainty quantification of trace physical model parameters using Bayesian analysis
… in code responses require knowledge of input model parameter uncertainties. Nuclear thermal-hydraulics codes such as RELAP5 and TRACE do not provide any information on physical model parameter uncertainties. A framework was developed to quantify input model parameter uncertainties based on …
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Macro scale physical model of nanoindentation on vertically aligned carbon nanotube forests
… forests. Under indentation, each CNT can be modeled as a cantilevered beam subjected to deflection from the penetration of the indenter. The resistance to indentation is the result of the cumulative bending of the VACNTs. Using beam theory, the effective bending stiffness is determined by …
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Design and manufacturing of a physical model of an icosahedral virus capsid
… this thesis consists of the development of a model of a virus capsid for educational and illustrative purposes. This thesis begins with a study of the virus and its capsid structure. It studies the icosahedral structure and the theory of quasi-equivalence, which were favored by viruses …
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Extreme imaging via physical model inversion : seeing around corners and imaging black holes
Imaging often plays a critical role in advancing fundamental science. However, as science continues to push the boundaries of knowledge, imaging systems are reaching the limits of what can be measured using traditional-direct approaches. By designing systems that tightly integrate novel sensor and …
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Experimental Evaluation of Stability Analysis Methods for Some Rock Slopes by a Physical Model
Made available in DSpace on 2014-12-14T07:10:52Z (GMT). No. of bitstreams: 1 7811313.pdf: 5643716 bytes, checksum: 6f56a090820bfb3eb7311bd280433a5c (MD5) Previous issue date: 1978
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iSIM: Ultra-deep submicron MOSFET physical model for analog and low power digital circuits
Restriction data tranferred 2014-07-01T11:23:04-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission
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A study of flow structures in a two-stage channel using field data, a physical model and numerical modelling
… over a three year period, and numerical modelling of open channel flow. An Acoustic Doppler Current Profiler (ADCP) was used to measure the spatial distribution of velocity in two cross sections of a small meandering river (River Blackwater, Hampshire) during inbank, bankfull and overbank …
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Response of Pile-Supported T-Walls to Fill Loading and Flood Loading Based on Physical Model Studies and Numerical Analyses
… of eight centrifuge tests to investigate and physically model the effects of settlement-induced bending moments on pile-supported T-walls. The centrifuge tests were evaluated and interpreted, and in order to better capture uncertainty, upper and lower bounds were estimated for the interpreted …
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JEMEZ RIVER CASE STUDY: UTILIZING A FROUDE NUMBER SIMILITUDE PHYSICAL MODEL, 1-D MOBILE BED NUMERICAL MODEL, AND A 2-D FIXED BED NUMERICAL MODEL FOR WEIR DESIGN INSIGHT
Physical and numerical models have been widely used to describe flooding patterns and to gain further understanding of river hydraulics around complex structures. Located on the Jemez River in New Mexico, the Jemez Weir stops the upstream progression of stream degradation and supports healthy …
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Ship hull resistance calculations using CFD methods
… and trade studies. In this work an existing physical model (DTMB #5415, similar to the US Navy DDG-51 combatant) was replicated in STAR-CCM+, initially without appendages, then with the addition of the appendages. Towed resistance was calculated at various speeds. The bare hull model was …
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Physical Modeling and Analysis of Seismic Data from a Simulated Fractured Medium
This thesis studies the physical seismic modeling of a simulated fractured medium to examine variations of seismic re ection amplitudes with source-receiver o set and azimuth (AVAZ). The intent is to extract information about the fracture orientation and magnitude of the anisotropy of a naturally …
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Benchtop testing of polyethylene passive sampling towards a quantitative analysis of volatile organic compounds (VOCs) in soil vapours
… work by means of a benchtop testing. A benchtop physical model was setup, which consisted of a jar of glass beads or sand, containing a known mass of toluene as the compound of concern (COC). A beaker of water was placed in the physical model as a second form of measurement of toluene …
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Fluid Flow Characterization and In Silico Validation in a Rapid Prototyped Aortic Arch Model
… CT scans from Claret Medical to create a physical construct of the aortic arch to experimentally validate a theoretical computer model through flow visualization. The hypothesis was that the empirical model can accurately mimic the fluid dynamic properties of the aortic arch in order …
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Physical and Numerical Modeling of SAGD Under New Well Configurations
… was investigated with help of numerical and physical models. Since mid 1980’s, SAGD process feasibility has been field tested in many successful pilots and subsequently through several commercial projects in various bitumen and heavy oil reservoirs. Although SAGD has been demonstrated to be …
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