Experimental investigation of aerodynamic coefficients of the Holy Trinity Column in wind tunnel

Aerodynamic testing of the Holy Trinity Column in Olomouc reveals that its wind load significantly decreases when surrounded by buildings, offering critical insights for conservation efforts. Researchers used 1:75 and 1:150 scale models tested in a wind tunnel to analyze static wind effects, confirming consistent aerodynamic coefficients regardless of Reynolds number (Re = 2.7 × 10^5). The smaller model also allowed examination of surrounding structures' influence, demonstrating their mitigating effect on wind forces. These findings provide actionable data for maintenance decisions, remedial work, and preservation strategies for this UNESCO-listed monument.

Michálek, P., & Hračov, S. (2020). Experimental investigation of aerodynamic coefficients of the Holy Trinity Column in wind tunnel. MATEC Web of Conferences, 313, 49. https://doi.org/10.1051/matecconf/202031300049