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چکیده
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The present article relates to a new transom stern form for high speed planing
hulls. To depress the intensive transom wave known as a \rooster tail", an innovative form
of transom stern is originated. The new form of the transom stern is introduced by cutting
the bottom of the hull near the transom stern. To verify the capability of the modi ed
transom stern, a three dimensional RANS solver is used. It is demonstrated that by using
the new transom stern shape, the intensive wave behind the transom will be substantially
reduced in the range of the parameters under investigation. In the meantime, it is expected
that the radar signature will also be decreased.
To study the e ect of the modi ed transom at various Froude numbers and di erent
trim angles, a set of numerical experiments are conducted. Three Froude numbers and
four trim angles are considered and it is observed that the cutted transom stern has a
signi cant e ect on the reduction of height and length (height reduction up to 61% and
length reduction up to 63%) of the rooster tail. Additionally, the accuracy of the numerical
solutions is validated by comparing them against the results of empirical formula existing
in the literature.
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