Morphology of Ion Exchanger Catalysts for BPA Synthesis
Jeřábek, Karel; Hanková, Libuše; Prokop, Zdeněk
2000 - English Most of the results contained in this report have beenalready sent to Rohm and Haas, but we feel it should be appropriate and useful to put together all information into one report. Keywords: bpa synthesis; ion exchanger catalyst; morphology Available at various institutes of the ASCR Morphology of Ion Exchanger Catalysts for BPA Synthesis

Most of the results contained in this report have beenalready sent to Rohm and Haas, but we feel it should be appropriate and useful to put together all information into one report.

Jeřábek, Karel; Hanková, Libuše; Prokop, Zdeněk
Ústav chemických procesů, 2000

Dynamics of the Wavy Film Flow Down an Inclined Plane. III. Orr-Sommerfeld Problem for the Power-Law GNF
Wein, Ondřej; Tihon, Jaroslav
2000 - English This report describes Orr-Sommerfeld problem for the powerlaw GNF. Keywords: inclined plane; power-law GNF; wavy film Available at various institutes of the ASCR Dynamics of the Wavy Film Flow Down an Inclined Plane. III. Orr-Sommerfeld Problem for the Power-Law GNF

This report describes Orr-Sommerfeld problem for the powerlaw GNF.

Wein, Ondřej; Tihon, Jaroslav
Ústav chemických procesů, 2000

Rotational Viscometry Under Presence of Apparent Slip at Walls. IV. Basic theory of the KK-type sensor
Wein, Ondřej
2000 - English This report describes basic theory of the KK-type sensor. Keywords: basic theory; rotational viscometry; apparent slip Available at various institutes of the ASCR Rotational Viscometry Under Presence of Apparent Slip at Walls. IV. Basic theory of the KK-type sensor

This report describes basic theory of the KK-type sensor.

Wein, Ondřej
Ústav chemických procesů, 2000

Rotational Viscometry under Presence of Apparent Slip at Walls. V. Immersion viscometry with a spherical spindle
Wein, Ondřej
2000 - English This report deals with immersion viscometry with a sphericalspindle. Keywords: spherical spindle; apparent slip; rotational viscometry Available at various institutes of the ASCR Rotational Viscometry under Presence of Apparent Slip at Walls. V. Immersion viscometry with a spherical spindle

This report deals with immersion viscometry with a sphericalspindle.

Wein, Ondřej
Ústav chemických procesů, 2000

Dynamics of the Wavy Film Flow Down an Inclined Plane. IV. Orr-Sommerfeld Problem for Generalized Newtonian Fluids
Wein, Ondřej; Tihon, Jaroslav
2000 - English This report describes Orr-Sommerfeld problem for generalized newtonian fluids. Keywords: newtonian fluids; inclined plane; wavy film Available at various institutes of the ASCR Dynamics of the Wavy Film Flow Down an Inclined Plane. IV. Orr-Sommerfeld Problem for Generalized Newtonian Fluids

This report describes Orr-Sommerfeld problem for generalized newtonian fluids.

Wein, Ondřej; Tihon, Jaroslav
Ústav chemických procesů, 2000

Dynamics of the Wavy Film Flow Down an Inclined Plane. II. Extended Similarity Profile for Newtonian Liquids
Wein, Ondřej; Tihon, Jaroslav
1998 - English Macroscopic balance method is a classic approximation in the theory of wavy film flows, see Kapitza (1949), Prokopiou et al. (1991), Wein (1993), Hwang (1994). Due to the mathemati-cal complexity of the related Orr-Sommerfeld problem for non-Newtonian liquids, the macro-scopic balance could be the only accessible method of attacking the problem at present. In the present report, we try to improve the macroscopic balance (MB) method for the Newto-nian fluids by (i) including the effect of normal stress changes into the x-moment balance, and (ii) using more realistic estimate of the time-dependent velocity field. Within the 3rd-order long-wave asymptotic expansion, O(a3), the improved MB method provides the results (celerity, criti-cal Reynolds number, wave number, identical with the solution of the related Orr-Sommerfeld problem. The new results indicate that (i) the improved x-momentum macroscopic balance is a correctly formulated functional property of the velocity field, (ii) the similarity velocity fie ld assumption is too simplified to provide a reasonable estimates of the linear stability parameters within the 3rd-order analysis, (iii) the extended similarity profile, correct up to O(a2), guarantees the estimate of the three basic wave characteristics, c, Recrit, a, within the accuracy including O(a3) terms. Macroscopic balance method is a classic approximation in the theory of wavy film flows, see Kapitza (1949), Prokopiou et al. (1991), Wein (1993), Hwang (1994). Due to the mathemati-cal complexity of the related Orr-Sommerfeld problem for non-Newtonian liquids, the macro-scopic balance could be the only accessible method of attacking the problem at present. In the present report, we try to improve the macroscopic balance (MB) method for the Newto-nian fluids by (i) including the effect of normal stress changes into the x-moment balance, and (ii) using more realistic estimate of the time-dependent velocity field. Within the 3rd-order long-wave asymptotic expansion, O(a3), the improved MB method prov ides the results (celerity, criti-cal Reynolds number, wave number, identical with the solution of the related Orr-Sommerfeld problem. The new results indicate that (i) the improved x-momentum macroscopic balance is a correctly formulated functional property of the velocity field, (ii) the similarity velocity field assumption is too simplified to provide a reasonable estimates of the linear stability parameters within the 3rd-order analysis, (iii) the extended similarity profile, correct up to O(a2), guarantees the estimate of the three basic wave characteristics, c, Recrit, a, within the accuracy including O(a3) terms. Macroscopic balance method is a classic approximation in the theory of wavy film flows, see Kapitza (1949), Prokopiou et al. (1991), Wein (1993), Hwang (1994). Due to the mathemati-cal complexity of the related Orr-Sommerfeld problem for non-Newtonian liquids, the macro-scopic balance could be the only accessible method of attacking the problem at present. In the present report, we try to improve the macroscopic balance (MB) method for the Newto-nian fluids by (i) including the effect of normal stress changes into the x-moment balance, and (ii) using more realistic estimate of the time-dependent velocity field. Within the 3rd-order long-wave asymptotic expansion, O(a3), the improved MB method provides the results (celerity, criti-cal Reynolds number, wave number, identical with the solution of the related Orr-Sommerfeld problem. The new results indicate that (i) the improved x-momentum macroscopic balance is a correctly formulated functional property of the velocity field, (ii) the similarity velocity field assumption is too simplified to provide a reasonable estimates of the linear stability parameters within the 3rd-order analysis, (iii) the extended similarity profile, correct up to O(a2), guarantees the estimate of the three basic wave characteristics, c, Recrit, a, within the accuracy including O(a3) terms. Keywords: wavy film; inclined plane; Newtonian liquids Available at various institutes of the ASCR Dynamics of the Wavy Film Flow Down an Inclined Plane. II. Extended Similarity Profile for Newtonian Liquids

Macroscopic balance method is a classic approximation in the theory of wavy film flows, see Kapitza (1949), Prokopiou et al. (1991), Wein (1993), Hwang (1994). Due to the mathemati-cal complexity of ...

Wein, Ondřej; Tihon, Jaroslav
Ústav chemických procesů, 1998

Rotational viscometry under presence of apparent slip at walls III. The cone-plate viscometer
Wein, Ondřej
1997 - English Available at various institutes of the ASCR Rotational viscometry under presence of apparent slip at walls III. The cone-plate viscometer

Wein, Ondřej
Ústav chemických procesů, 1997

Dynamics of the wavy film flow down the inclined plane. I. Linear stability analysis for Newtonian liquids
Wein, Ondřej; Tihon, Jaroslav
1997 - English Available at various institutes of the ASCR Dynamics of the wavy film flow down the inclined plane. I. Linear stability analysis for Newtonian liquids

Wein, Ondřej; Tihon, Jaroslav
Ústav chemických procesů, 1997

Rotational viscometry under presence of apparent slip at walls II. Effect of AWS on the nature of viscometric flow in a parallel-plate viscometer
Wein, Ondřej
1997 - English Available at various institutes of the ASCR Rotational viscometry under presence of apparent slip at walls II. Effect of AWS on the nature of viscometric flow in a parallel-plate viscometer

Wein, Ondřej
Ústav chemických procesů, 1997

Absorption with a second-order reaction, a numerical study
Wein, Ondřej; Slezák, Jiří
1996 - English Available at various institutes of the ASCR Absorption with a second-order reaction, a numerical study

Wein, Ondřej; Slezák, Jiří
Ústav chemických procesů, 1996