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Động lực học truyền nhiệt chảy melting của nanofluid vi mô trong môi trường tác động của bộ truyền động điện từ với độ dày không đồng nhất và nguồn nhiệt không đồng đều
Tóm tắt
Trong nghiên cứu hiện tại, cơ chế lan truyền nhiệt melting trong chuyển động của chất lỏng vi mô được xem xét trên một bộ truyền động điện từ (đĩa Riga) với độ dày lớp không đều. Chất lỏng chứa các nanoparticle nhỏ dưới tác động của nguồn nhiệt không đồng nhất, bức xạ, sự di chuyển nhiệt và chuyển động ngẫu nhiên của các hạt nhỏ kết hợp với độ dẫn nhiệt biến đổi. Các phương trình vận chuyển được phát triển đã được giải quyết bằng phương pháp Pseudo-spectral sau khi được đơn giản hóa từ đạo hàm riêng sang đạo hàm thường. Những đóng góp từ các yếu tố vật lý khác nhau phát sinh từ phương trình chính được trình bày qua đồ thị và bảng nhằm thể hiện tác động của chúng đến các đại lượng không thứ nguyên. Các phát hiện cho thấy rằng sự truyền nhiệt ở giao diện rắn – lỏng tăng lên với sự tăng cường của bức xạ nhiệt, độ dày bề mặt và các tham số nguồn nhiệt, nhưng sự gia tăng trong điều kiện melting ngăn chặn sự lan truyền nhiệt tại bề mặt. Thêm vào đó, yếu tố sức cản bề mặt giảm với các tham số vật liệu cao hơn, số Hartmann đã điều chỉnh cùng với tham số độ dày bề mặt, trong khi hệ số ma sát được tăng cường bởi bậc số mũ của quy luật sức mạnh.
Từ khóa
#micropolar fluid #melting heat transfer #electromagnetic actuator #thermal radiation #heat sourceTài liệu tham khảo
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