Ulla Ojaniemi

DSc (Tech),

  • Phone+358407273975
19992020

Research output per year

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Research Output

2020

CFD simulation of fouling of plate heat exchanger by phosphate calcium

Ojaniemi, U., Pättikangas, T., Jäsberg, A., Puhakka, E. & Koponen, A., Jan 2020, Proceedings of International Conference on Heat Exchanger Fouling and Cleaning – 2019 (Peer-reviewed) . Zettler, H. (ed.). Heat Transfer Research, p. 45-52 8 p.

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

Open Access

Fouling dynamics of SMUF on a plate heat exchanger

Jäsberg, A., Turpeinen, T., Tanaka, A., Ketola, A., Järvinen, M., Ojaniemi, U., Pättikangas, T. & Koponen, A., Jan 2020, Proceedings of International Conference on Heat Exchanger Fouling and Cleaning – 2019 (Peer-reviewed) . Zettler, H. (ed.). Heat Transfer Research, p. 322-328 7 p.

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

Open Access
2019

Interfacial surface energies - stainless steel and titanium nitride substrates and CaCO3 and CaCHPO4 depositions

Puhakka, E., Ojaniemi, U. & Pättikangas, T., 3 Dec 2019, Proceedings of International Conference on Heat Exchanger Fouling and Cleaning – 2019 (Peer-reviewed) . Heat Transfer Research, 8 p.

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

Open Access
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

1 Citation (Scopus)
2016

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

22 Citations (Scopus)
2015
Open Access
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

1 Citation (Scopus)
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

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

20 Citations (Scopus)
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

2008

CFD Model for Particulate Fouling - Modelling Particle Adhesion on Surface XDLVO Theory

Ojaniemi, U., Pättikangas, T., Riihimäki, M. & Manninen, M., 2008, Proceedings of the 6th International Conference on Computational Fluid Dynamics in the Oil & Gas, Metallurgical and Process Industries, CFD 2008.

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

2007

Comparison of Simulated and Measured Flow Patterns: Solid and Gas Mixing in a 2D Turbulent Fluidized Bed

Ojaniemi, U., Kallio, S., Hermanson, A., Manninen, M., Seppälä, M. & Taivassalo, V., 2007, Fluidization XII - New Horizons in Fluidization Engineering: Proceedings of the 12th International Conference on Fluidization. Bi, X. (ed.). Brooklyn, p. 727-734

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

Open Access
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

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
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
2002

Enhanced plant data utilization with on-line residence time calculator

Pasanen, A., Ojaniemi, U. & Pennanen, J., 2002, CHISA 2002 - 15th International Congress of Chemical Engineering. Czech Society of Chemical Engineering, 5 p.

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

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
1999

Methodology development for integrated pollution prevention

Pasanen, A., Ojaniemi, U., Olin, M. & Liimatainen, M., 1999.

Research output: Contribution to conferenceConference articleScientific