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Newton number (also called the drag coefficient) and Archimedes number are plotted versus the Reynolds number for the laminar, transition and turbulent flow types using a log-log scale. A numerical example of the terminal fall velocity computation of a single spherical particle in a Newtonian...
Platforms: JavaScript
License: Freeware | Size: 20.48 KB | Download (40): Terminal Fall Velocity of a Single Spherical Particle in a Newtonian Fluid Download |
Professor Jim Wilkes provides representative values of the volumetric flow rate versus the applied pressure gradient for horizontal flow in a pipe [1]. The pipe radius is equal to 0.01 m. We use these representative values, in conjunction with the analytical expression of the volumetric flow...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (39): Non-Newtonian Fluid Model Determination (for power law and Bingham fluids) Download |
Flow past a wedge is governed by the Falkner-Skan equation. This equation admits only numerical solution, which requires the application of the shooting technique. The program plots the velocity for various wedge angles. The result obtained is in agreement with figure 8-10 in page 352 of Deen's...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (41): Numerical solution of the Falkner-Skan equation for various wedge angles Download |
In the programs, we perform flash calculations of a mixture of hydrocarbons (ethane, propane, n-butane and n-pentane) using the Rachford-Rice equation. The phi-phi method, based on the SRK equation of state, is used to compute the equilibrium constants. We also find the True Vapor Pressure. All...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (44): Flash Calculations using the Soave-Redlich-Kwong equation of state Download |
Two quaternary systems are studied: (1) Acetic Acid - Ethanol - Water- Ethyl Acetate and (2) Acetic Acid - Butanol - Water- Butyl Acetate. In these two systems, liquid phase esterification occurs. The residue curve map is computed using the UNIQUAC model and gas phase acetic acid dimerization....
Platforms: Matlab
License: Freeware | Size: 20.48 KB | Download (41): Residue Curve Map Computation using UNIQUAC Model: Case of a Quaternary Reactive System Download |
The inversion of Laplace transforms is performed using two methods: (1) the Zakian method and (2) the Fourier series approximation. Results are in agreement with analytical solutions. The Zakian method presents problems for transcendental functions. The Fourier series gives better results when...
Platforms: Matlab
License: Freeware | Size: 20.48 KB | Download (46): Numerical Inversion of Laplace Transforms Download |
The program computes the velocity and temperature profiles for free convection past an isothermal vertical plate. Results are obtained after solving two coupled nonlinear differential equations. The shooting method is used to obtain the boundary conditions, required to solve the coupled ODEs,...
Platforms: Matlab
License: Freeware | Size: 20.48 KB | Download (48): Free Convection Past a Vertical Flat Plate Download |
The programs compute the bifurcation diagram for the cubic map and a realistic population dynamics model. The value of parameter r, when the cycle of period three appears, is indicated. As expected, for higher values of r, we observe chaotic behaviour. Both models are given in the problems?...
Platforms: Matlab
License: Freeware | Size: 20.48 KB | Download (48): Bifurcation Diagram for the cubic map and a realistic model for population dynamics Download |
Three factors interfere in the determination of pellet mean size. These are the impeller speed, the binding solution and the pelletization time. We use experimental design (Doehlert design) to predict pellet mean size versus the three factors. We determine the quadratic model by multi-linear...
Platforms: Matlab
License: Freeware | Size: 20.48 KB | Download (44): Doehlert Design for Wet Pelletization in High Shear Mixer Download |
We use a batch column with four theoretical plates to separate a binary mixture of water and methanol at 1 bar. Temperature and concentration profiles versus time are obtained for a reflux ratio equal to 10. In addition, the total moles in the still and distillate are plotted versus time. This...
Platforms: Matlab
License: Freeware | Size: 20.48 KB | Download (52): Separation of a water-methanol mixture using a four stage batch distillation column Download |
The code uses the SRK EOS written for a single component to plot isotherms, compute gas and liquid molar volumes and to plot vapor pressure versus temperature for ethane.Please visit these links for a paper by Z. Nasri and H. Binous where all equations are given as well as the same calculations...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (45): Screenshot Applications of the Soave-Redlich-Kwong Equation of State using Matlab Download |
We would like to rise water temperature with a heater. Oulet temperature must be equal to the set point temperature (80dlT-C). Proportional (P), Proportional-Integral (PI) and Proportional-Integral-Derivative (PID) control are used and the respective results are compared. Inlet water temperature...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (44): Temperature Control of a Water Tank Download |
The program shows how to plot figure 14.4 page 248 presented in T. L. Hill, An Introduction to Statistical Thermodynamics, Dover, New York, 1986. The Bragg-Williams approximation gives pressure-volume isotherms similar to those obtained using the van der Waals equation and it predicts first-order...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (40): Pressure-volume isotherms for a Bragg-Williams lattice gas Download |
The program allows one to choose the best reactor setup among three alternatives: (1) a plug flow reactor with recycle, (2) a combination of a plug flow reactor and a stirred tank reactor in series and (3) two stirred tank reactors in series. This problem was solved graphically by O. Levenspiel...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (43): Selection of Optimum Chemical Reactor Design Download |
In the program, we obtain equilibrium constants, compressibility factors, molar volumes and densities using the Soave-Redlich-Kwong equation of state. We find the same results as those given by Henley and Seader in Equilibrium-Stage Separation Operations in Chemical Engineering, Wiley, 1981...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (46): Equilibrium Constants Computation using the Soave-Redlich-Kwong equation of state Download |
The code computes the velocity profile for the vertical laminar flow of a Bingham fluid down a wall. As expected the profile is flat near the surface of the liquid film. In fact, we have a zero velocity gradient only when the shear stress is large enough (superior to tau0). This behaviour is...
Platforms: Matlab
License: Freeware | Size: 20.48 KB | Download (39): Vertical Laminar Flow of a Bingham Fluid down a Wall Download |
The velocity and shear stress versus radial position are determined for laminar flow of a Carreau fluid in a pipe. The shooting method is used to verify the no-slip boundary condition at the piped-deOaos wall. Once the velocity at the center is determined, the governing Differential Algebraic...
Platforms: Matlab
License: Freeware | Size: 20.48 KB | Download (44): Velocity Profile of Laminar Flow of Carreau fluid in a Pipe Download |
Set of functions providing the attenuation and energy absorption coefficients of x-ray and gamma-ray photons in various materials, based on NIST report 5632, by J. Hubbell and S.M. Seltzer.X = PhotonAttenuation(Material, Energy, Options, Thickness)Function providing the attenuation and energy...
Platforms: Matlab
License: Freeware | Size: 163.84 KB | Download (44): PhotonAttenuation Download |
In the program, an example from the field of nonlinear chemical dynamics is presented. Governing equation and reaction scheme can be found in G. Nicolis, Dynamique Chimique, Thermodynamique, cindoTetique et mdoTecanique statistique, Dunod, Paris 2005. We use the arc length continuation method to...
Platforms: Matlab
License: Freeware | Size: 20.48 KB | Download (58): Screenshot Application of the arc length continuation method in nonlinear chemical dynamics Download |
Computation of the residue curve map for the MTBE chemistry is presented in the program. The equilibrium, taking place in the liquid phase, transforms methanol and isobutene into MTBE with n-butane being an inert component. Thermodynamic data can be found in the excellent paper by Niang and...
Platforms: Matlab
License: Freeware | Size: 20.48 KB | Download (46): Residue Curve Map for the mixture MTBE/Methanol/isobutene/n-butane at P=1 atm Download |