Tank Geometrisinin Çalkantı Kuvvetlerine Etkisi

Year 2022, , 126 - 137, 13.01.2023

Fatih Cüneyd Korkmaz

https://doi.org/10.54926/gdt.1192083

Abstract

Çalkantı kuvvetlerinin değişiminde dalga formu kadar, çarpma yüzeyinin geometrisi de etkilidir. Dalga form ise çalkantı hareketinde; tankın şekline, salınım frekansının tankın doğal frekanslarıyla çakışmasına bağlı olarak değişir. Bu çalışmada benzer boyuttaki dikdörtgen ve pahlı tankın aynı salınım frekansındaki tek eksende salınım esnasında meydana gelen yüzey deformasyonları ve yanal yüzeylerde oluşturduğu basınçların karşılaştırılması yapılmıştır. Geniş salınım frekans aralığındaki çalkantı sebebiyle yüzeylerde oluşan basınç dağılımı her iki tank için ölçülmüştür. Serbest yüzey deformasyonları rezonans ve rezonans dışı bölgelerde takip edilerek dalgaların çarpma etkileri karşılaştırılmıştır. Her iki tankta da rezonans bölgelerinde maksimum basınçlar ölçülürken diğer salınım frekanslarında basınçlar düşmüştür. Tankların benzer salınım-doğal frekans oranlarındaki çalkantıları, pahlı tankın geometrisi yardımıyla dalga formlarını değiştirdiği gibi aynı basınç ölçüm noktalarında da daha az ölçülmesi sebep olmuştur.

Keywords

Sıvı Çalkantısı, dikdörtgen tank, pahlı tank, basınç ölçümü, serbest yüzey takibi.

Supporting Institution

Yıldız Teknik Üniversitesi

Project Number

FBA-2018-3341

The Effect of Tank Geometry on Sloshing Forces

Abstract

The geometry of the impact surface is as effective as the wave shape in the change of sloshing forces. The wave shape depends on the shape of the tank, oscillation frequency coinciding with the natural frequencies of the tank under sloshing motion. This study compares the surface deformations and pressures on the lateral walls that occur during oscillation along one axis at the same oscillation frequency between a rectangular tank and a chamfered tank of similar dimensions. The pressure distribution on the surfaces due to sloshing was measured for both tanks over a wide range of oscillation frequencies. From experiments, free surface deformations were monitored in the resonant and non-resonant regions, and the impact effects of the waves were compared. While maximum pressures were measured in the resonant regions of both tanks, pressures decreased at other oscillation frequencies. The sloshing of the tanks changed the wave shapes based on the geometry of the chamfered tank and also caused lower measurements at the same pressure measurement points at similar oscillation/natural frequency ratios.

Keywords

Liquid sloshing, Rectangular tank, Chamfered tank, pressure measurement, free surface tracking.

Project Number

FBA-2018-3341

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