COMPARATIVE MULTIPHASE FLOW ANALYSIS OF DRY AND WET MARINE EXHAUST SYSTEMS BASED ON THERMAL, PRESSURE AND TURBULENCE CHARACTERISTICS
Abstract
This study employs CFD to compare dry and wet marine exhaust systems under identical conditions: a 15 m/s exhaust velocity at 470 °C and a 125 mm pipe. The dry exhaust, discharging into air, forms a buoyant plume extending approximately five pipe diameters with temperatures exceeding 200 °C downstream. Jet velocity remains above 5 m/s at 4D, and turbulence kinetic energy decreases by ~30% over the same distance. In contrast, the wet exhaust submerged in seawater cools below 60 °C within 2D, and jet velocity drops under 2 m/s by 1.5D. A localized static pressure rise of +12 kPa at the outlet is observed, approximately 100 times greater than the <0.12 kPa disturbance in the dry case. Turbulence decays by ~80% within 2D downstream of the wet exit. Dry exhaust ensures efficient plume dispersion with minimal back-pressure but risks deck contamination, whereas wet exhaust provides thermal suppression and signature reduction at the expense of higher engine load. Future work should explore transient, three-dimensional simulations for improved design guidance.
Keywords
References
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Details
Primary Language
English
Subjects
Maritime Engineering (Other)
Journal Section
Research Article
Publication Date
September 9, 2025
Submission Date
July 1, 2025
Acceptance Date
August 20, 2025
Published in Issue
Year 2025 Volume: 1 Number: 1
APA
Görgülü, Y. F., Ekici, S., & Karakoç, T. H. (2025). COMPARATIVE MULTIPHASE FLOW ANALYSIS OF DRY AND WET MARINE EXHAUST SYSTEMS BASED ON THERMAL, PRESSURE AND TURBULENCE CHARACTERISTICS. International Maritime Studies and Research Journal, 1(1), 21-28. https://izlik.org/JA54DK52SH
AMA
1.Görgülü YF, Ekici S, Karakoç TH. COMPARATIVE MULTIPHASE FLOW ANALYSIS OF DRY AND WET MARINE EXHAUST SYSTEMS BASED ON THERMAL, PRESSURE AND TURBULENCE CHARACTERISTICS. IMSAR. 2025;1(1):21-28. https://izlik.org/JA54DK52SH
Chicago
Görgülü, Yasin Furkan, Selcuk Ekici, and Tahir Hikmet Karakoç. 2025. “COMPARATIVE MULTIPHASE FLOW ANALYSIS OF DRY AND WET MARINE EXHAUST SYSTEMS BASED ON THERMAL, PRESSURE AND TURBULENCE CHARACTERISTICS”. International Maritime Studies and Research Journal 1 (1): 21-28. https://izlik.org/JA54DK52SH.
EndNote
Görgülü YF, Ekici S, Karakoç TH (September 1, 2025) COMPARATIVE MULTIPHASE FLOW ANALYSIS OF DRY AND WET MARINE EXHAUST SYSTEMS BASED ON THERMAL, PRESSURE AND TURBULENCE CHARACTERISTICS. International Maritime Studies and Research Journal 1 1 21–28.
IEEE
[1]Y. F. Görgülü, S. Ekici, and T. H. Karakoç, “COMPARATIVE MULTIPHASE FLOW ANALYSIS OF DRY AND WET MARINE EXHAUST SYSTEMS BASED ON THERMAL, PRESSURE AND TURBULENCE CHARACTERISTICS”, IMSAR, vol. 1, no. 1, pp. 21–28, Sept. 2025, [Online]. Available: https://izlik.org/JA54DK52SH
ISNAD
Görgülü, Yasin Furkan - Ekici, Selcuk - Karakoç, Tahir Hikmet. “COMPARATIVE MULTIPHASE FLOW ANALYSIS OF DRY AND WET MARINE EXHAUST SYSTEMS BASED ON THERMAL, PRESSURE AND TURBULENCE CHARACTERISTICS”. International Maritime Studies and Research Journal 1/1 (September 1, 2025): 21-28. https://izlik.org/JA54DK52SH.
JAMA
1.Görgülü YF, Ekici S, Karakoç TH. COMPARATIVE MULTIPHASE FLOW ANALYSIS OF DRY AND WET MARINE EXHAUST SYSTEMS BASED ON THERMAL, PRESSURE AND TURBULENCE CHARACTERISTICS. IMSAR. 2025;1:21–28.
MLA
Görgülü, Yasin Furkan, et al. “COMPARATIVE MULTIPHASE FLOW ANALYSIS OF DRY AND WET MARINE EXHAUST SYSTEMS BASED ON THERMAL, PRESSURE AND TURBULENCE CHARACTERISTICS”. International Maritime Studies and Research Journal, vol. 1, no. 1, Sept. 2025, pp. 21-28, https://izlik.org/JA54DK52SH.
Vancouver
1.Yasin Furkan Görgülü, Selcuk Ekici, Tahir Hikmet Karakoç. COMPARATIVE MULTIPHASE FLOW ANALYSIS OF DRY AND WET MARINE EXHAUST SYSTEMS BASED ON THERMAL, PRESSURE AND TURBULENCE CHARACTERISTICS. IMSAR [Internet]. 2025 Sep. 1;1(1):21-8. Available from: https://izlik.org/JA54DK52SH