Conference Session

DELOS Best Paper Nominations

Collection

2008 Annual Conference & Exposition

Authors

Jason Yao, East Carolina University; Loren Limberis, East Carolina University

Tagged Divisions

Division Experimentation & Lab-Oriented Studies

H 2 (s) k2 G p ( s) ? ? q( s) (1 - sT1 )(1 - sT2 ) (1)where H2(s) is tank 2 level, q(s) is the flow rate into tank 1 (or the input flow), and the timeconstants T1 and T2 are related to k1, k2, and A by: A2 A(2k1 - k 2 ) T1T2 ? and T1 - T2

Conference Session

Electrical and Computer Engineering Laboratories

Collection

2008 Annual Conference & Exposition

Authors

Oscar Ortiz, LeTourneau University; Paul Leiffer, LeTourneau University

Tagged Divisions

Division Experimentation & Lab-Oriented Studies

organized tocover the following topics: Series and parallel RLC circuits, frequency response, series andparallel resonance, mutual inductance, ideal transformers, Z, Y, H and T parameters, Fourierseries, Fourier and LaPlace transforms.At their junior year, or after completing both circuits I and II, students can enroll in analogelectronics, EEGR 3113, a three-hour lecture course. The content of the course is organized insix to seven topics that cover the following subjects: 1. Diodes and Rectifiers. 2. Semiconductor Physics. 3. Two-Ports, Load Lines and Biasing. 4. Piecewise-Linear Models. 5. Q-Point Stabilization, Thermal and Environmental Considerations. 6. Emitter Follower, Common Base and Common Emitter, Coupling and

Conference Session

Fluid Mechanics Experiments and Laboratories

Collection

2008 Annual Conference & Exposition

Authors

B. Terry Beck, Kansas State University; Brian Anderson, Kansas State University; Mina Hosni, Kansas State University

Tagged Divisions

Division Experimentation & Lab-Oriented Studies

the duct model. The airspeeds are too small for the normal wind tunnel measurement systemwhich makes use of the pressure drop in the wind tunnel converging section resulting from theBernoulli effect. An indirect method is possible, by measuring the volumetric flow rate suppliedto the rake manifold from the smoke generation system. If the total volumetric flow rate of aircontaining smoke is Q, then the average discharge velocity from N identical rake tubes will be U= Q/(NA), where A is the internal cross-sectional area of a single typical rake tube. Since theexit tube flow must be properly balanced with the external airspeed for so-called iso-kineticinjection, U will be approximately the airspeed in the tunnel test section at the point of the

Conference Session

Inter- and Multidisciplinary Laboratories

Collection

2008 Annual Conference & Exposition

Authors

Samuel Lakeou, University of the District of Columbia; Esther Ososanya, University of the District of Columbia; Wagdy Mahmoud, University of the District of Columbia; Fatou Mbengue, University of the District of Columbia; Bodjona Coboyo, University of the District of Columbia; Abdulaziz SIrag, University of the District of Columbia; Ben Latigo, University of the District of Columbia

Tagged Divisions

Division Experimentation & Lab-Oriented Studies

circuit condition (V=0), the diode current of equation (1) will be reduced tothe short circuit current Isc= Iop given by: Isc= Iop = (A Ln gop + A Lp gop) (2)When the diode is not loaded or when there is an open circuit across the diode, the totalcurrent I=0. The corresponding voltage V=Voc is the open circuit voltage and is expressedby: kT Ç Ln - L p Voc ? ln È . g op - 1Ù (3) q ÉÈ ( L p / v p ) pn - ( Ln / v n )n p ÙÚAn illuminated diode can therefore generate power but not much power can be deliveredby a single junction which will have a voltage less than its contact

Conference Session

Experiments and Laboratories in Mechanical Engineering

Collection

2008 Annual Conference & Exposition

Authors

Messiha Saad, North Carolina A&T State University

Tagged Divisions

Division Experimentation & Lab-Oriented Studies

= . (11) Q in . . Qin = m HV fuel (12)Where HVfuel is the heating value of the fuelExperimental Results Figures 6-11 show sample of the output results obtained at various operatingconditions by the students. 120000 360 Engine Speed, Revolutions Per Minute

Conference Session

DELOS Best Paper Nominations

Collection

2008 Annual Conference & Exposition

Authors

Richard Drushel, Case Western Reserve University; John Gallagher, Wright State University

Tagged Divisions

Division Experimentation & Lab-Oriented Studies

2000 27/30 C H GLSC N P 9/9 12 Spr. 2001 28/29 C H GLSC N P 4/4 13 Fall 2001 26/30 C H GLSC N P 7/8 14 Spr. 2002 25/27 C H GLSC N Q 1/1 15 Fall 2002 27/30 C H GLSC N Q 15/15 16 Spr. 2003 27/28 C H GLSC N R 12/12 17 Fall 2003 27/30 C H GLSC

Conference Session

Fluid Mechanics Experiments and Laboratories

Collection

2008 Annual Conference & Exposition

Authors

MURAT OKCAY; BILGEHAN UYGAR OZTEKIN

Tagged Divisions

Division Experimentation & Lab-Oriented Studies

  Region Flow Separation Figure 9. Gradual step flow model exampleThe experiment clearly shows that the flow accelerates as the width of the channel decreases.This is a demonstration of continuity. The incompressible continuity law states that:Where Q is the flow rate, A is the cross sectional area and u is the velocity. The vector field canalso be plotted as can be seen in Figure 10. Page 13.463.10 Figure 10. Vector field plot Proceedings of the 2008 American Society for Engineering Education Annual Conference & Exposition