Ulla Ojaniemi

DSc (Tech),

20002018
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Research Output 2000 2018

2018

Hydrodynamics and kinetics in semi-batch stirred tank precipitation of L-glutamic acid based on pH shift with mineral acids

Ojaniemi, U., Puranen, J., Manninen, M., Gorshkova, E. & Louhi-Kultanen, M., 16 Mar 2018, In : Chemical Engineering Science. 178, p. 167-182 16 p.

Research output: Contribution to journalArticleScientificpeer-review

Hydrochloric Acid
Minerals
Glutamic Acid
Hydrochloric acid
Hydrodynamics
2016
16 Citations (Scopus)

CFD modelling of CaCO3 crystallization fouling on heat transfer surfaces

Pääkkönen, T. M., Ojaniemi, U., Pättikangas, T., Manninen, M., Muurinen, E., Keiski, R. L. & Simonson, C. J., 2016, In : International Journal of Heat and Mass Transfer. 97, p. 618-630

Research output: Contribution to journalArticleScientificpeer-review

fouling
charge flow devices
Crystallization
Fouling
Computational fluid dynamics
2015
Open Access
Fouling
Heat exchangers
Liquids
Wall function
Computational fluid dynamics
2014

Modelling of L-Glutamic acid crystallization with CFD and Multiblock model

Ojaniemi, U., Gorshkova, E., Manninen, M., Alatalo, H. & Louhi-Kultanen, M., 2014, p. 564-566.

Research output: Contribution to conferenceConference articleScientific

2013

Surface patterning of stainless steel in prevention of fouling in heat transfer equipment

Pääkkönen, T. M., Ojaniemi, U., Riihimäki, M., Muurinen, E., Simonson, C. J. & Keiski, R. L., 2013, Materials Science Forum: Physical and Numerical Simulation of Materials Processing VII. p. 493-500 (Materials Science Forum, Vol. 762).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleScientificpeer-review

Fouling
Stainless steel
Heat transfer
Hydrodynamics
Crystallization
2012

Modification of heat transfer surfaces for fouling mitigation

Pääkkönen, T. M., Riihimäki, Muurinen, E., Keiski, R., Puhakka, E., Ojaniemi, U., Manninen, M., Pättikangas, M., Guillot, J., Duday, D., Lecoq, E. & Choquet, P., 2012.

Research output: Contribution to conferenceOther conference contributionScientific

Fouling
Heat transfer
Heat exchangers
Computational fluid dynamics
Molecular modeling
19 Citations (Scopus)

Wall function model for particulate fouling applying XDLVO theory

Ojaniemi, U., Riihimäki, M., Manninen, M. & Pättikangas, T., 2012, In : Chemical Engineering Science. 84, p. 57-69 12 p.

Research output: Contribution to journalArticleScientificpeer-review

Wall function
Fouling
Heat exchangers
Dynamic models
Computational fluid dynamics
2010

Fouling in high solid content suspension - Effect of nucleating air and background electrolyte

Riihimäki, M., Ojaniemi, U., Pättikangas, T. J. H., Pääkkönen, T. M., Manninen, M., Puhakka, E., Muurinen, E., Simonson, C. J. & Keiski, R. L., 2010, Proceedings of 8th International Conference on Heat Exchanger Fouling and Cleaning VIII, 2009. p. 192-199

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Open Access
2009

Fouling of Heat Transfer Surfaces and Its Mitigation: Integration of Experimental and Novel Modeling Techniques

Riihimäki, M., Puhakka, E., Pääkkönen, T. M., Ojaniemi, U., Pättikangas, T., Manninen, M., Muurinen, E. & Keiski, R. L., 2009, Proceedings of the EnePro Conference. Oulu: University of Oulu, p. 114-116 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

2006

Combination of multicomponent equilibria with CFD in modeling fast reactive processes

Ojaniemi, U., Penttilä, K., Koukkari, P. & Manninen, M., 2006.

Research output: Contribution to conferenceConference AbstractScientificpeer-review

modeling
thermodynamics
software
neutralization
chemical reaction

Modelling of multiphase chemical reactors (ModCheR): Final report

Manninen, M. (ed.), Ojaniemi, U., Olin, M., Pättikangas, T., Seppälä, M., Taivassalo, V., Aittamaa, J., Alopaeus, V., Hynynen, K. M., Jussila, S., Laakkonen, M., Liiri, M., Moilanen, P., Nurmela, A., Pulkkinen, I., Alatalo, H., Hatakka, H., Kallas, J., Laari, A., Sha, Z. & 7 others, Turunen, I., Hermanson, A., Kallio, S., Eloranta, H., Honkanen, M., Saarenrinne, P. & Saikkonen, T., 2006, Espoo: VTT Technical Research Centre of Finland. 185 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 2340).

Research output: Book/ReportReport

Open Access
modeling
crystallization
drag
pipe flow
chemical
2005

Multiphase flows in process industry: ProMoni

Kataja, M. (ed.), Koponen, A., Luukkainen, V. M., Manninen, M., Ojaniemi, U., Poranen, J., Salmela, J., Selenius, P., Halttunen, J., Honkanen, M., Pärssinen, T., Zhou, S., Engblom, M., Fagerudd, K., Geant, M. F., Hermanson, A., Kallio, S., Tarvainen, T., Kolehmainen, V., Kaipio, J. P. & 8 others, Vanne, A., Markkanen, K., Vauhkonen, M., Myllys, M., Saarenrinne, P., Haavisto, S., Rehn, E. & Eloranta, H., 1 Jun 2005, Espoo: VTT Technical Research Centre of Finland. 177 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 2286).

Research output: Book/ReportReport

Open Access
Industry
industry
Finland
fluidized beds
Research
2000

Implementation of IPPC-directive: Development of a new generation methodology and a case study in pulp industry

Olin, M., Pasanen, A., Ojaniemi, U., Mroueh, U-M., Walavaara, M., Larjava, K., Vasara, P., Lobbas, P. & Lillandt, K., 2000, Espoo: VTT Technical Research Centre of Finland. 85 p. (VTT Publications; No. 429).

Research output: Book/ReportReport

Open Access
mass balance
methodology
industry
top-down approach
bottom-up approach