Software Listing of Author : "Wilton Pereira Da Silva"
- 1D Heat Transfer
- License: Shareware
- Price: 45.00


The 1D Heat Transfer software is used for to study one-dimensional heat transfer (steady and unsteady states). It can be used for the geometries: wall, Lx = width; long cylinder, Lx = length; sphere, Lx = R/3 - with value zero for the flux in the center - and semi-infinite wall, Lx must be greater than the studied position. The software simulates problems with constant and variable properties. The initial condition can depend from the position. Type of boundary conditions: temperature, flux and convection.
- Publisher: Wilton Pereira da Silva
- Date Released: 20-01-2005
- Download Size: 1125 KB
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- Platform: Win2000, Windows CE, WinOther
- Convective Adsorption - Desorption
- License: Shareware
- Price: 50.00


Convective Adsorption - Desorption software is used to study water diffusion processes with known experimental data, for the following geometries: infinite slab, infinite cylinder, sphere, finite cylinder and parallelepiped. The software makes possible the determination of the diffusivity 'D' and the convective mass transfer coefficient 'h' through optimization.
Keywords: adsorption, soaking, desorption, drying, kinetics, diffusion, diffusivity, Biot's number, convective mass transfer coefficient, thin layer, partial differential equation, infinite slab, infinite cylinder, sphere, finite cylinder, parallelepiped, transport phenomena, water diffusion, optimization, curve fitting, boundary condition of the third kind, Cauchy. Convective Adsorption - Desorption. Convective software is used to study water diffusion process with known...
- Publisher: Wilton Pereira da Silva
- Date Released: 07-02-2011
- Download Size: 667 KB
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- Platform: Win2000, Windows Server, Windows Vista, WinOther, WinVista
- LAB Fit Curve Fitting Software
- License: Shareware
- Price: 60


LAB Fit is a software for Windows developed for treatment and analysis of experimental data. At LABFit program you are able to: 1) Treat similar data (grouped and ungrouped dataset, one or two samples); 2) Treat non-similar data; 3) Determine propagated error (error propagation up to eight independent variables); 4) Plot 2D and 3D graph (normal, parametric, imported dataset, contour of maps); 5) Execute math calculations (system of linear equations, roots of function, non-linear equation, ordinary differential equation - ODE up to fifth order, system of differential equations - up to five first order ODE, calculator, etc); 6) Extract data (x;y) from a 2D graph (digitizing); 7) Curve Fit (nonlinear regression - least squares method, Levenberg-Marquardt algorithm - with almost 500 functions at the library, with 1 and 2 independent...
- Publisher: Wilton Pereira da Silva
- Date Released: 22-01-2007
- Download Size: 3398 KB
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- Platform: Unix, Win2000, WinOther
- xyExtract Graph Digitizer
- License: Shareware
- Price: 25


The "xyExtract" software is used for to extract data from a 2D graph (orthogonal and nonorthogonal axes) contained in a graphic file (scanned, PDF document or in a some file like gif, jpg, etc). The graphic file must be saved in a bitmap file. Then, the "xyExtract" converts the graph back to xy data file (up to 1500 points). If you want, use the âSave Projectâ option on the âFileâ menu, for a posterior opening of the work. After each click, use the âAdjustmentâ option to move the marked point (pixel to pixel), if necessary. Important: the xyExtract is a easy-to-use software and it guides you during whole the process for the points recovery. Keywords: Graph and plot digitizer, digitizing, digitize, ungraphing, scanned graphs, contour maps, charts, PDF, gif, jpg files, extract,...
- Publisher: Wilton Pereira da Silva
- Date Released: 12-02-2004
- Download Size: 452 KB
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- Platform: Win2000, WinOther