
Flow Through a Catalytic Reactor
16 May 2019  Teaching Materials
Use porous flow theory to describe pressureflow rate and plug/mixing behavior of flow through a packed bed of catalyst spheres.

Dimensional Analysis: Catalytic Combustion of Carbon Monoxide
16 May 2019  Teaching Materials
Use dimensional analysis to understand how parameters and material properties determine uniformity of reactant gas concentration across porous spheres coated with catalysts.

Freezing by Radiation and Convection
16 May 2019  Teaching Materials
Use radiation and a heat transfer coefficient to estimate the initial rate of solidification of the solid shell at the top of a casting while the temperature in the shell can be considered uniform, then set up the equation for mixed conduction/convectionradiation limited cooling.

Heat Conduction and Diffusion in Alloy Casting
16 May 2019  Teaching Materials
Derive temperature and liquid concentration profiles during die casting of a roughly plateshaped alloy part.

Coextrusion of Multilayer Polymer Sheets
16 May 2019  Teaching Materials
Sketch the flow profile of a multilayer polymer flow through an extrusion die and beyond it, and predict the final layer thickness distribution.

Electron Beam Centrifugal Atomization of Metal
16 May 2019  Teaching Materials
Use a heat balance to calculate electron beam power required to continuously heat and melt metal as it is atomized, including heat losses from the top surface due to evaporation and radiation.

Effective Integration of NIST Reference Data, Reference Materials, and Informatics in Support of Science and Technology
15 May 2019  Online Presentations
In this talk, a general description of NIST’s SRM program will be provided, highlighting some examples related to environmental science, clinical diagnoses and petroleum chemistry. In addition, issues related to the effective integration of reference data with reference materials and...

Interface Enabled Technologies
09 May 2019  Online Presentations
This talk presents examples of how interfaces of similar and dissimilar materials give us opportunities for new science and possibly new applications.

CD Injection Molding I: NavierStokes
10 Apr 2019  Teaching Materials
State simplifying assumptions which can be made regarding radial injection molding of liquid polycarbonate polymer into a CD mold, and simplify the cylindrical form of the NavierStokes equations accordingly.

CD Injection Molding II: Shear Stress
09 Apr 2019  Teaching Materials
Solve the cylindrical NavierStokes equations simplified in Part I to give the velocity profile in radial injection molding of a CD, and calculate the shear stress based on this velocity profile.

Radiative Cooling of an Aluminum Cube
09 Apr 2019  Teaching Materials
Show that radiative cooling of an aluminum cube is Newtonian (uniform temperature), and calculate time required to cool through a certain temperature range by radiation alone.

Bottom Filled Mold
07 Apr 2019  Teaching Materials
Calculation of mold filling times, with and without a constant height of metal in a riser. Problem uses modified Bernoulli equation for the mechanical energy balance and the students are asked to determine which resistances are significant.

CastaBox: Casting Conditions and Macroporosity
07 Apr 2019  Teaching Materials
An illustration of threedimensional finite difference simulation of heat conduction with phase change and complex boundary conditions, this requires students to adjust boundary conditions to make the top surface of a regular hexahedral "casting" to freeze last, eliminating...

Batch and Continuous Flow Reactors
30 Mar 2019  Teaching Materials
Derive expressions for productivity of plug flow and perfectly mixed continuous flow reactors, discuss quality, and describe advantages of batch reactors.

Blood Filtration
30 Mar 2019  Teaching Materials
Estimate flow rate of blood through two types of porous filter: an array of tubes and a packed bed of solid spheres.

Blood Flow and Vascular Deposits
30 Mar 2019  Teaching Materials
Analyze the effect of increasing fat deposit thickness on blood flow through human arteries.

Casting of a Cylindrical Part in a Thermally Resistive Mold
30 Mar 2019  Teaching Materials
Use of integral analysis for development of approximate solution for solidification in cylindrical thermally resistive mold.

Stokes Flow Past a Fluid Sphere
20 Mar 2019  Teaching Materials
The solution to the Stokes flow equations for viscous flow past a viscous sphere, which in the limiting cases of zero and infinite interior viscosity gives the drag force on bubbles and solid spheres respectively.

Dimensional Analysis for Dummies
20 Mar 2019  Teaching Materials
Derivation of the error function solution to the diffusion equation, and description of the point source in 1, 2 and 3dimensions..

Application of Integral Analysis to Semiinfinite Diffusion Couple
20 Mar 2019  Teaching Materials
Apply integral analysis to semiinfinite diffusion couple.