用ddpm模型 模拟气泡聚并与破碎



  • 主要参考这篇文献
    Cho S M , Thomas B G , Kim S H . Bubble Behavior and Size Distributions in Stopper-Rod Nozzle and Mold during Continuous Casting of Steel Slabs[J]. Isij International, 2018, 58(8):1443-1452.
    17499a51-4128-498d-98bb-ba8b87651e8c-image.png

    现在想在DEFINE_DPM_INJECTION_INIT(init_bubbles,I) 这个宏里创建和删除颗粒实现颗粒聚并破碎效果,但是在injection里新增一个颗粒 的宏没在标准的帮助里,在dpm_*.h的文件中试了些个都不好用,想咨询下专家的建议



  • Fluent不太懂。不过我想问一下,你这里面bubble考虑湍流分散力了么



  • 文献里没说考没考虑,不过fluent里可以加入,有针对颗粒的相关湍流分散力模型



  • #include "udf.h"
    #include "dpm.h"
    DEFINE_DPM_SCALAR_UPDATE(ceshi, c, t, initialize, p)
    {
    	Injection *I;
    	Injection *Ilist = Get_dpm_injections();
    
    
    	loop(I, Ilist)
    	{
    		Particle *p_new;
    		p_new = new_particle(I, FALSE);
    		p_new->part_id = get_next_part_id();
    		P_INJECTION(p_new) = I;
    		p_new->I_id = 0;
    		((p_new)->stream_index) = 1;
    		P_POS(p_new)[0] = 0;
    		P_POS(p_new)[1] = 0;
    		P_POS(p_new)[2] = 5;
    		P_VEL(p_new)[0] = 0;
    		P_VEL(p_new)[1] = 0;
    		P_VEL(p_new)[2] = 0;
    		P_DIAM(p_new) = 0.001;
    		p_new->n_steps = 0;							
    		p_new->next_time_step = solver_par.flow_time_step;
    		P_TIME(p_new) = solver_par.flow_time;
    		memcpy((char *)&(p_new->init_state),
    		(char *)&(p_new->state), sizeof(particle_state_t));
    		P_FLOW_RATE(p_new) = 0.001;
    		p_new->time_of_birth = 0.0;
    		alloc_pvars(p_new);
    
    		append_particle_to_list(p_new, &(I->p), I);/* 问题函数 */
    
    		I->n_particles++;
    	}
    }
    

    append_particle_to_list(p_new, &(I->p), I); 这个函数总是出问题,有人知道怎么用么这个函数


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