Akademik Veri Yönetim Sistemi
7. ULUSLARARASI 19 MAYIS YENİLİKÇİ BİLİMSEL YAKLAŞIMLAR KONGRESİ, 19 Mayıs 2022, ss.1-4
On
offshore platforms, especially cylindrical legs are always tremendously put
through assorted wave impact forces. The pressure measurement of the wave loads
and the structural deformations that occur on the cylinders were figured out
for the platform's life span. In this study, the wave forces acting on the
cylindrical structures are investigated experimentally. Concurrently, the
pressure distributions and deformations that happened in the modified cylinder
surface characteristics were decided by applying a hydrophobic coating.
Hydrophobic
surface coating resulted in the increased water drop angle to the surface,
hence the adhesion of the water on the surface has reduced. The geometric
change or added weight coated on the surfaces of the cylinders is not remarkable.
Both hydrophobic and hydrophilic surface cylinders were subjected to wave loads
with different wave amplitudes and frequencies repeatedly. The wave's pressure
distributions and surface deformations of the cylinders were measured by three
pressure sensors installed on the focal points of the cylinders and a strain
gauge installed inside the cylinders, respectively. Each pressure measurement
variation was analysed and interpreted in detail when the surface
characteristics of cylinders changed.
For the
hydrophobic surfaces, the pressure response of the cylinder changed depending
on the position of the pressure sensor by decreasing the maximum pressure or
the impact time. The structural deformations because of the cylinders surface
characteristics that changed for the hydrophobic surface were compared with the
strain values. In addition, the distribution of the impacting wave on the
surface varied, and the structural deformation also changed. This observation
is supported by image processing, and it reveals the difference in the water
body size to which the surface is exposed.