دانشگاه صنعتی امیرکبیر نشریه مهندسی مکانیک امیرکبیر 2008-6032 50 2 2018 06 22 Analytical Solution of Heat Transfer in LaserIrradiated Skin Tissue with Surface Heat Convection Using Dual Phase Lag Model حل تحلیلی انتقال حرارت درون بافت پوست تحت تابش لیزر به همراه انتقال حرارت جابجایی با استفاده از مدل تاخیر فاز دوگانه 285 294 950 10.22060/mej.2017.11638.5147 FA مجید حیدری فارغ التحصیل دانشکده فنی مهندسی گلپایگان مرضیه رضازاده گروه مهندسی مکانیک، دانشکده فنی و مهندسی گلپایگان، گلپایگان، اصفهان، ایران مصطفی نصیری گروه مهندسی مکانیک، دانشکده فنی و مهندسی گلپایگان، گلپایگان، اصفهان، ایران Journal Article 2016 05 15 <span>The temperature distribution in the laser-irradiated biological tissue is investigated considering heat convection. The first- and the second-degree burn times are predicted using estimation of thermal damage. A non-Fourier equation of bio-heat transfer based on dual phase lag model is employed. The transport behavior of laser light in the tissue is regarded as highly absorbed and effects of the phase lag times on thermal response and thermal damage are explored considering different heat convection coefficients. The Laplace transform with discretization technique and also using boundary conditions, a set of algebraic equations in Laplace domain is generated which are solved by numerical Laplace inverse transform. The results show that the highly absorbed laser light in the tissue plays an important role in the burned skin time. Also, convective heat transfer boundary condition on the surface provides different results, even by considering the natural convection on the surface, and the first- and the second-degree burns are postponed at least 0.02 second. </span> <span lang="AR-SA" dir="RTL">توزیع</span><span lang="AR-SA"> <span dir="RTL">دما</span> <span dir="RTL">در</span> <span dir="RTL">بافت</span> <span dir="RTL">پوست</span> <span dir="RTL">در</span> <span dir="RTL">اثر</span> <span dir="RTL">تابش</span> <span dir="RTL">نور</span> <span dir="RTL">لیزر</span> <span dir="RTL">به</span> <span dir="RTL">همراه</span> <span dir="RTL">انتقال</span> <span dir="RTL">حرارت</span> <span dir="RTL">جابه</span> <span dir="RTL">جایی</span> <span dir="RTL">روی</span> <span dir="RTL">سطح</span> <span dir="RTL">پوست،</span> <span dir="RTL">بررسی</span> <span dir="RTL">می گردد</span></span><span>.<span lang="AR-SA" dir="RTL">پی</span><span lang="AR-SA"> <span dir="RTL">شبینی</span> <span dir="RTL">زمان</span> <span dir="RTL">سوختگی</span> <span dir="RTL">درجه</span> <span dir="RTL">اول</span> <span dir="RTL">و</span> <span dir="RTL">دوم</span> <span dir="RTL">با</span> <span dir="RTL">استفاده</span> <span dir="RTL">از</span> <span dir="RTL">تخمین</span> <span dir="RTL">آسیب</span> <span dir="RTL">حرارتی</span> <span dir="RTL">به</span> <span dir="RTL">بافت</span> <span dir="RTL">بدست</span> <span dir="RTL">می</span> <span dir="RTL">آید</span></span>. <span lang="AR-SA" dir="RTL">از</span><span lang="AR-SA"> <span dir="RTL">معادله</span> <span dir="RTL">انتقال</span> <span dir="RTL">حرارت زیستی</span> <span dir="RTL">با</span> <span dir="RTL">مدل</span> <span dir="RTL">تأخیر</span> <span dir="RTL">فاز</span> <span dir="RTL">دوگانه،</span> <span dir="RTL">که</span> <span dir="RTL">یک</span> <span dir="RTL">مدل</span> <span dir="RTL">غیر</span> <span dir="RTL">فوریه</span> <span dir="RTL">است،</span> <span dir="RTL">استفاده</span> <span dir="RTL">می شود</span></span>. <span lang="AR-SA" dir="RTL">تابش</span><span lang="AR-SA"> <span dir="RTL">لیزر</span> <span dir="RTL">روی</span> <span dir="RTL">بافت</span> <span dir="RTL">به صورت</span> <span dir="RTL">به</span> <span dir="RTL">شدت</span> <span dir="RTL">جذب شونده</span> <span dir="RTL">در</span> <span dir="RTL">نظر</span> <span dir="RTL">گرفته</span> <span dir="RTL">شده</span> <span dir="RTL">و</span> <span dir="RTL">تأثیر</span> <span dir="RTL">تأخیر</span> <span dir="RTL">فاز</span> <span dir="RTL">بر</span> <span dir="RTL">روی</span> <span dir="RTL">توزیع</span> <span dir="RTL">دما</span> <span dir="RTL">و</span> <span dir="RTL">عمق</span> <span dir="RTL">نفوذ</span> <span dir="RTL">جبهه ی</span> <span dir="RTL">موج</span> <span dir="RTL">حرارتی</span> <span dir="RTL">با</span> <span dir="RTL">در</span> <span dir="RTL">نظر</span> <span dir="RTL">گرفتن</span> <span dir="RTL">ضرایب</span> <span dir="RTL">انتقال حرارت</span> <span dir="RTL">جابه</span> <span dir="RTL">جایی</span> <span dir="RTL">متفاوت،</span> <span dir="RTL">بررسی</span> <span dir="RTL">شده</span> <span dir="RTL">است</span></span>. <span lang="AR-SA" dir="RTL">با</span><span lang="AR-SA"> <span dir="RTL">استفاده</span> <span dir="RTL">از</span> <span dir="RTL">تبدیل</span> <span dir="RTL">لاپلاس</span> <span dir="RTL">به</span> <span dir="RTL">همراه</span> <span dir="RTL">روش</span> <span dir="RTL">گسسته</span> <span dir="RTL">سازی</span> <span dir="RTL">و</span> <span dir="RTL">استفاده</span> <span dir="RTL">از</span> <span dir="RTL">شرایط مرزی،</span> <span dir="RTL">یک</span> <span dir="RTL">دستگاه</span> <span dir="RTL">معادله</span> <span dir="RTL">جبری</span> <span dir="RTL">در</span> <span dir="RTL">حوزه ی</span> <span dir="RTL">لاپلاس</span> <span dir="RTL">به دست</span> <span dir="RTL">آمده</span> <span dir="RTL">و</span> <span dir="RTL">با</span> <span dir="RTL">استفاده</span> <span dir="RTL">از</span> <span dir="RTL">لاپلاس</span> <span dir="RTL">معکوس</span> <span dir="RTL">عددی</span> <span dir="RTL">حل</span> <span dir="RTL">شده</span> <span dir="RTL">است</span></span>.<span lang="AR-SA" dir="RTL"> نتایج</span><span lang="AR-SA"> <span dir="RTL">نشان</span> <span dir="RTL">می دهد</span> <span dir="RTL">که</span> <span dir="RTL">تابش</span> <span dir="RTL">لیزر</span> <span dir="RTL">به</span> <span dir="RTL">شدت</span> <span dir="RTL">جذب</span> <span dir="RTL">شونده،</span> <span dir="RTL">پارامتری</span> <span dir="RTL">تعیین کننده</span> <span dir="RTL">در</span> <span dir="RTL">مدت</span> <span dir="RTL">زمان</span> <span dir="RTL">سوختگی</span> <span dir="RTL">در</span> <span dir="RTL">بافت</span> <span dir="RTL">پوست</span> <span dir="RTL">می</span> <span dir="RTL">باشد</span></span>.<span lang="AR-SA" dir="RTL"> همچنین</span><span lang="AR-SA"> <span dir="RTL">افزایش</span> <span dir="RTL">ضریب</span> <span dir="RTL">انتقال</span> <span dir="RTL">حرارت</span> <span dir="RTL">جابه جایی،</span> <span dir="RTL">تأثیر</span> <span dir="RTL">چشمگیری</span> <span dir="RTL">بر</span> <span dir="RTL">نتایج</span> <span dir="RTL">دارد،</span> <span dir="RTL">به</span> <span dir="RTL">گونه</span></span>-<span lang="AR-SA" dir="RTL">ای</span><span lang="AR-SA"> <span dir="RTL">که</span> <span dir="RTL">با</span> <span dir="RTL">در</span> <span dir="RTL">نظر</span> <span dir="RTL">گرفتن</span> <span dir="RTL">جابه جایی طبیعی</span> <span dir="RTL">روی</span> <span dir="RTL">سطح،</span> <span dir="RTL">زمان های</span> <span dir="RTL">سوختگی</span> <span dir="RTL">درجه</span> <span dir="RTL">اول</span> <span dir="RTL">و</span> <span dir="RTL">درجه</span> <span dir="RTL">دوم،</span> <span dir="RTL">حداقل</span></span> 02 / 0 <span lang="AR-SA" dir="RTL">ثانیه</span><span lang="AR-SA"> <span dir="RTL">به</span> <span dir="RTL">تعویق</span> <span dir="RTL">می</span> <span dir="RTL">افتد</span></span>.</span> https://mej.aut.ac.ir/article_950_6c577481bf6df89410e1a034cd033f19.pdf