Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Harry V. Nordén"'
Autor:
Ville Alopaeus, Harry V. Nordén
Publikováno v:
Computers & Chemical Engineering. 23:1177-1182
Mass transfer coefficients are usually based on measurements from binary mixtures. This leads to scalar correlation equation for mass transfer coefficient. These equations are usually obtained from dimensional analysis, and they include fractional po
Publikováno v:
Journal of Crystal Growth. :749-753
A population balance based dynamic model was made for dissolution of sucrose crystals. The model was used for simulation and parameter estimation. The calculation sequence was designed so that experimental measurement data could be used as inputs. Th
Autor:
Harry V. Nordén, Kari Ala-Kaila
Publikováno v:
Nordic Pulp & Paper Research Journal. 12:94-102
Autor:
Petteri Kauppinen, Harry V. Nordén
Publikováno v:
Separation Science and Technology. 29:1319-1334
A mathematical model describing the formation of filter cakes in filtration is presented. Filtration equations are derived from volume balances and Darcy's equation, and they are presented in the same form as partial differential diffusion equations.
Publikováno v:
Filtration & Separation. 31:67-74
The study concentrates on developing the Larox PF pressure filter to be more effective by changing feed combinations and the filter chamber shape and height, and examining the cake formation. The filter used in the experiments was a modified Larox PF
Autor:
Martti A. Pekkanen, Harry V. Nordén
Publikováno v:
Chemical Engineering Science. 45:3359-3366
A new coordinate transformation that can be used to obtain constant transformed flow rates is presented. The phsical requirements is that the mass transfer ratio is constant—which is the case, for example, if the specific enthalpies of the saturate
Autor:
Martti A. Pekkanen, Harry V. Nordén
Publikováno v:
Chemical Engineering Science. 44:343-352
The paper presents a new calculation method for steady-state stagewise mass and heat transfer operations. The method is restricted to linear equilibrium relationships. The ideal stage model used is a new one and equations obtained are quite simple wh
Autor:
Ilari Seppä, Harry V. Nordén
Publikováno v:
BIT. 6:317-331
An upright cylindrical container blasted into the rock is filled instantaneously with a warm liquid. Heat is transferred from the liquid into the surrounding rock and the open air. The temperature of the liquid and the surrounding rock is determined
Autor:
Harry V. Nordén, Ilari Seppä
Publikováno v:
BIT. 6:144-154
In this paper a problem on transient heat conduction in the walls of a gas channel with a rectangular cross-section is solved. The temperature of the gas flow in the channel rises linearly while the temperature of the surrounding open air is constant
Autor:
Harry V. Nordén, Ilari Seppä
Publikováno v:
BIT Numerical Mathematics. 4:224-242
The present paper describes the solution of a heat conduction problem by use of Laplace transformation and numerical inversion. Numerical results are given and compared with the asymptotic expressions and further the accuracy is discussed by comparin